Answer:
Explanation:
In 1976, The Viking 1 and Viking 2 probes landed on Mars. For six years they transmitted fascinating panoramic views of the red and rocky soil of Mars back to Earth. Twenty years passed before a third probe landed on Mars. In 1997, the Pathfinder probe landed a miniature vehicle named Sojourner on the planet. The probes operated for three months and sent back large amounts of data on the Martian environment. At the same time, the Mars global surveyor probe was placed in orbit to take an overall portrait of the planet. It supplied hundreds of thousands of bits of information, especially on climatic variations.
Answer:
Viking 1 and Viking 2 probes transmitted panoramic views of the red and rocky soils back to Earth after six years later. The Pathfinder probe sent back large amounts of data of the environment especially about climatic variations in only three months. You can tell the technology was very different between these two because of how long it took for each probe to gather data.
Which of the following explains why antibiotics will not work against a viral infection?
a
Viruses replicate at such an accelerated rate that antibiotics are unable to control colonization and growth.
b
Viruses create highly resistant endospores that preserve their genetic material against antibiotics.
c
Viruses are not cellular and do not contain the lipid and protein markers targeted by antibiotics.
d
Viruses exchange genetic material with nearby bacteria that have become resistant to antibiotics.
Answer:
C.
Explanation:
Viruses don't have cell walls that can be attacked by antibiotics; instead they are surrounded by a protective protein coat.
Electrons move about the nucleus of an atom in regions called
Answer:
atomic orbitals or subshells it the same name
A particle of rain water has just reached the ocean. In what order will the particle now complete the following steps of the water cycle?
Answer:
evaporation - condensation - precipitation - surface runoff
Explanation:
For a water particle that has just reached the ocean, the correct order of the water cycle is as follows: evaporation (liquid water changes to water vapor) → condensation (water vapor changes to liquid water) → precipitation (water falls to the Earth's surface) → surface runoff (water travels along the surface of the Earth into a reservoir, such as an ocean). The water cycle is a continuous cycle with no strict beginning or end.
Describe the relationship between cell shape and function. Give an
example of cell shape influencing cell function.
Answer:The shape of a cell greatly influences its function. Each cell has a shape that best suits its functions. For example, red blood cells are round with a large surface area on top to absorb maximum oxygen. ... Nerve cells are long and have elongated terminal branches to pass messages over long distances in our body.
Explanation:
What predication can you make about future levels of carbon dioxide CO2 in the atomphere
It can be more than one
Answer:
Only the matter stored in body tissues
Explanation:
Cuz the seal took some of the matter for itself :)
Carson divided 40 unripe bananas evenly among eight paper bags and sealed the bags. He poked 20 small holes in four of the bags and left the other four without holes. He kept the bags at room temperature for three days. Then, Carson opened the bags and counted the number of brown spots on each banana. He compared the average number of brown spots on bananas from bags with holes to the average number of brown spots on bananas from bags without holes.Identify the question that Carson's experiment can best answer.
Answer:
See the answer below
Explanation:
From the illustration of the experiment, the question that Carson can best answer is that "Do bananas develop more brown spots if they are kept in bags with holes compared to bags without holes?"
The independent variable in the experiment is the hole poked in the bags while the dependent variable is the number of brown spots on each banana. The difference between the subjects is the hole poked in the bags, hence, any difference in the number of brown spots between bananas in the bags with holes and those in the bags without holes can be attributed to the hole poked in the bags.
Therefore, the question that can be answered from the experiment is to see if poking holes in bags make bananas to develop more brown spots compared to bags without holes.
What would occur if a nitrogen base in the RNA strand is mis-matched? How would that affect the protein? How could that affect the organism?
Answer:
Errors during Replication. DNA replication is a highly accurate process, but mistakes can occasionally occur as when a DNA polymerase inserts a wrong base. Uncorrected mistakes may sometimes lead to serious consequences, such as cancer.
In mismatch repair, mistakes that happen during DNA replication are recognized, cut out and replaced. ... This mismatched base pair causes a point mutation, which you can think of as a typo in the DNA sequence of the new strand.
Explanation:
Incorrectly paired nucleotides cause deformities in the secondary structure of the final DNA molecule. During mismatch repair, enzymes recognize and fix these deformities by removing the incorrectly paired nucleotide and replacing it with the correct nucleotide.
Eukaryotes have solved the end-replication problem by locating highly repeated DNA sequence at the end, or telomeres, of each linear chromosome. In humans and other vertebrate organisms, the sequence of nucleotides in telomeres is TTAGGG, is repeated between 100 and 1000 times.
Differentiate between pathogens and vectors
Answer:
A pathogen is an agent that causes disease, such as a virus, bacterium, protozoan, or parasite. A vector is an organism, often an arthropod, that carries a pathogen to its host. So, for example, for malaria the pathogen is a protozoan called Plasmodium, and the.
Explanation:
How do you believe that economics (money) and our environment are connected.
Answer:
Explanation:
Economics our environment are connected in an ongoing cycle we have created. Economics have a special influence on the environment because of the way we have set up our social system. There are many good affects of this cycle, such as people reserving land for endangered species. However, there are also bad affects, such as people monopolizing land just for themselves.
A scientist mixes a solid and a liquid.
The mixture gets warmer and has bubbles.
What do we know from this evidence?
A) That a reaction happened because it is warm with bubbles
B) That a reaction did not happen because it is warm with bubbles
C) That A reaction happened because there was no color change
D) That A reaction did not happen because there was no color change
Answer:
A
Explanation:
Signs of chemical reaction
How do oxbow lakes form? A. It is formed as lakes grow larger due to erosion and begins to look like an ox. B. It is formed when a bend in a river is cut off to form a lake. C. It is formed when a delta grows large enough to cut off a river to form a lake. D. It is formed when a dam stops the flow of a river and creates a lake.
Answer:
Oxbow lake is formed when a bend in a river is cut off to form a lake.
Explanation:
OPTON A - It is formed as lakes grow larger due to erosion and begins to look like an ox.This statement is incorrect , as the shape of the oxbow lake is not like an ox , it is a horse-shoe shaped lake .
OPTION B - It is formed when a bend in a river is cut off to form a lake.This statement is correct , as An oxbow lake is a U-shaped lake that forms to create a free-standing body of water when a large meander of a river is cut off.
OPTION C - It is formed when a delta grows large enough to cut off a river to form a lake.This statement is also wrong, as a river delta is specified by this statement.
OPTION D - It is formed when a dam stops the flow of a river and creates a lake.This statement is also false, since the creation of a reservoir is established by this statement.
FORMATION OF OXBOW LAKE -:The neck of the meander gets narrower and narrower progressively. The curve gradually grows so close that the river slices through the neck of the meander to take a new, straighter path. Sediment locks the end of the old loop over time. This leaves a region of water that is different, called an oxbow lake.
Hence , the correct option is B.
Answer:
Bbbb
Explanation:
1. On a hillside there are 100 flowering plants. One géne pair controls flower
height. Tall (T) is incompletely dominant over short (T). There are 81-tall
, plants,
18 medium plants and-1-short plant. What is the frequeney of each allele in the
populätion?
Answer:
There are 180 T alleles on the hillside and 20 t alleles.
81 tall plants have two T, 18 medium plants have one T and one t, short plant has two t.
Explanation:
The tall plants will b TT, medium plants will be Tt, short plant is tt.
Why does the skeletal system contain both immovable and movable joints? A. Immovable joints allow my bones to move; movable joints connect my bones. B. Immovable joints connect my bones; movable joints allow my bones to move. C. Both kinds of joints allow the skeletal system to store materials. D. Both kinds of joints allow the skeletal system to protect organs.
Answer:
The correct answer is - option B. immovable joints connect my bones; movable joints allow my bones to move.
Explanation:
In the skeletal system, both immovable joints and movable joints are present and both have a distinct role in the body and skeletal system. The immovable joints are the joints that provide the stability to the bones that are connected and maintain the structure these joints also helps in protecting the organs.
Movable joints are the joints that are helpful in movement and allow bones that are connected to feely or up to a limit move.
Thus, the correct answer is - option B. immovable joints connect my bones; movable joints allow my bones to move.
Answer:
B
Explanation:
immovable joints connect bones well that a correct answer
Sex-Related inheritance: X chromosome; Non Sex-Related inheritance
What we already know:
All species under normal circumstances will have two sex chromosomes. X and Y, Y is known to be dominant. All females will have two X chromosomes (XX, one X will always be given by the mother), whereas males will have one Y chromosome and one X chromosome (XY, one X will always be given by the mother. The father, on the other hand, could give either an X or a Y, that all depends on what sex chromosome the father's sperm donated.)
So, how many chromosomes do a typical human have? Correct, a typical human has 32 chromosomes and only 2 of them are sex chromosomes. Now we must understand that the sex chromosome carries more than just the one code for the individual sex. That means that the gene codes for more than just the sex.
Building on that knowledge:
Sex-Related Inheritance that differs from sex, is carried on one or two of an individual's sex chromosome. Whereas Non-Sex-Related Inheritance is carried on the other thirty chromosomes that the individual also carries.
Sex-Related inherited genes that are passed via the father to male offsprings, carried on the Y chromosome, are easiest to spot in a family. All males will have this trait and no females will.
Non-sex-related inheritance can be passed from male to female and from female to male, this is sometimes harder to differentiate from genes carried on the X chromosome because the mother always gives an X chromosome.
Vocabulary:
phenotype: the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment.
GIVING BRAINLIEST, FIVE STARS AND THANKS TO BEST ANSWER!!! PLZ AND THANK YOU!!!!!! HAVE A GREAT DAY/NIGHT! :3 UwU :D
The eggs of a cone bearing plant:
receive sperm through the development of tubes
are held on the sticky fluid of the female cone
receive pollen from the wind
Answer:
Receive pollen from the wind.
Explanation:
The sperm of the male cone floats through the air and lands on the scale of the female cone. Sperm cells move through the pollen tube of the female cone and one of them fertilized an egg cell which eventually turns into a seed.
Answer:
The eggs of a cone bearing plant receive sperm through the development of tubes.
Explanation:
Cone-bearing plants have two types of cones: female cones and male cones. Reproduction begins when one of the pollen grains from inside a pollen sac on the male cone floats through the air to the scale of a female cone. A pollen tube then grows from the pollen grain toward the female ovule. Sperm cells move through the pollen tube and one of them fertilizes an egg cell, which then develops into a seed. The winged seed floats to the ground and begins to germinate. As the top of the seedling reaches for light, the hypocotyl straightens and the cotyledons spread out.
Feel free to mark brainliest.
Two people are pushing a disabled car. One exerts a force of 200 N east, the other a force of 150 N east. What is the net force exerted on the car.
If excessive amounts of hot water are discharged into a lake, the immediate result will most likely be
Answer:
all of the wildlife within the lake would go into shock
Explanation:
wildlife such as fish go into shock very easily when it comes to change in temperatures! a goldfish dropped straight from it's baggy into a bowl is far more likely to go into shock and die than one who was adjusted to the water temp first.
What's the dense connective tissue that surrounds most organs called?
Answer:
Bone.
Explanation:
Bone is the hardest connective tissue. It provides protection to internal organs and supports the body. Bone's rigid extracellular matrix contains mostly collagen fibers embedded in a mineralized ground substance containing hydroxyapatite, a form of calcium phosphate.
Magnesium deposits are most likely to form from:
precipitation
condensation
evaporation
respiration
Answer:
precipitation
sorry I'm not sure how to explain that
HELP PLEASE
Witch of the following would introduce a bias into an experiment?
A. Publishing your experimental results in a scientific journal.
B. Allowing other scientist to repeat and verify your experimental results.
C. Using a computer to record and store your data.
D. Discarding data that does not fit with your personal expectations.
Answer:
D. Discarding data that does not fit with your personal expectations.
Explanation:
One of the ways in which bias can be introduced into an experiment is by discarding data that does not fit with one's personal expectations.
Bias in an experiment is the process whereby scientists alter the results of their experiment to achieve their own expected results.
Anomalous values defined by one's expectation can make an experiment highly biased. A scientist is supposed to be objective in their experimental approaches.Explain why you cannot draw a conclusion about the effect of one variable in an investigation when the other variables are NOT controlled.
Answer:
Because you don't know which variable caused the effect.
Explanation:
It's always important to have a control because you need to be able to pinpoint exactly what variable caused the specific effect to take place. This is also why multiple variables can not be tested at once.
Iron reacts with sulfur to form iron sulfide. If 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?
A.
60 grams
B.
150 grams
C.
120 grams
D.
30 grams
Answer:
Its D. 30 grams:)
Explanation:
What best explains how you can smell burned toast from another room?
Siphoning of wetlands in Iraq has led to
a. rising sea levels
b. drought
c. an increase in biodiversity
d. them becoming arid desert
Answer:
its D
Explanation:
them becoming arid desert. just took the test and got a 100 :)
Answer:
D because Iraq though the years became a dry sandy desert mostly made up of desert mountains to this day
Explanation:
A isn't right it'll be less of a desert but also less land, the mountains also only makes of a a bit of a quarter or more of the land
B is a possibility but wont explain how it is today nor on it's conditions
C is wrong as it's the opposite of now
1. List the 4 basic mechanisms of evolutionary change?
Answer:
natural selectionmutationgenetic driftgene flowMechanisms of evolution correspond to violations of different Hardy-Weinberg assumptions.
Convection currents can be described best by:
a. Hot air rising, cold air sinking
b. Cold water rising, hot water sinking
C. Random distribution of temperatures
d. Hot air sinking, cooler air rising
Answer:
A.Hot air rising,cold air sinking
Explanation:
Hot air rises in a confined or closed space.That is one of the reasons why firefighters have some people crawl on the flour to get out. the smoke is hot air so it rises to the ceiling of the room, while cold air stays lower.
Diffusion takes place
Group of answer choices
only through a lipid bilayer membrane.
from an area of low concentration to an area of high concentration.
from an area of high concentration to an area of low concentration.
only in liquids.
[tex]\large\underline{\bf\red{Diffusion:-}}[/tex]
It is the process of movement of substances from a region of higher concentration to a region of lower concentration .
Hence correct option is [ c ] .
More to know about topic .
Diffusion :-
Water from soil is absorbed by plants by Diffusion.Amoeba exchanges Carbon dioxide & Oxygen by the process of Diffusion.It is a form of passive transport .It does not utilises energy .surface area of 1x1x8
Answer:
What's the surface area of 1x1x8?
Explanation:
34 feet squared! Hope that helps.♡
Answer:
34 feet squared
Explanation:
this is part 2 from the question
please answer it and if you can answer part 1 ftom the question and thank you
2 Label each of the diagrams below to show whether the seeds are spread by exploding pods, wind,
water or animals.
Answer:
I think The seed is forming into a flower or The seed is forming into a fruit.
Explanation:
The seed was forming into a plant.