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julia-pushkina [17]
3 years ago
7

When breathing, which body was part contracts to help expand the lung and relaxes to allow air exhalation?

Biology
1 answer:
SOVA2 [1]3 years ago
3 0
C is your answer hope that helps!
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Which of the following is not a common teratogen? a. HIV infection b. SSRI antidepressant medications c. Folic acid d. Alcohol
poizon [28]

Option C

Folic acid  is not a common teratogen

<u>Explanation:</u>

Teratogen -  Any factor that can interrupt the growth of a fetus or embryo. Teratogens may generate a birth deformity in the child. Or a teratogen may terminate the pregnancy unmitigated. The aspects of teratogens include radiation, parental infections, drugs.

Alcohol exploitation can produce mental obstacles, distortion, germination obstacles, miscarriage, and behavioral complications in newborns. Women who have not taken the hepatitis B vaccine should be held for immunization if they are at danger of sexually dispatched disease or blood appearance. The vaccine may be administered during pregnancy. SSRI antidepressant medications is also a factor of teratogen to cause deformity to fetus growth.

6 0
3 years ago
Why is mRNA needed in cells, and how does it help with creating proteins?
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MRNA is needed in the cells because it directs the synthesis of proteins which is found in the cytoplasm. It is a molecule that carries the message contained within DNA to the ribosome. The Proteins are assembled on the ribosomes using the mRNA nucleotide sequence as a guide.
4 0
3 years ago
In an experiment, shara feeds her rat different brands of rat food (brands x, y, and z) each for 2 weeks and weighs the rat over
Advocard [28]

The variables are defined as the factors in an experiment, which are liable to change. The variable can be dependent or independent. The Independent variable is a variable, which is unaffected by the changes in the other variables.

In this case, the brand of the food Shara feeds to the rats is independent factor, but it is changes in the system, so, it is an independent variable.

The effect on the weight of the rat is dependent on the brand of food they are consuming. So, the weight of rats is dependent variable.

8 0
3 years ago
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Which of the following could possibly increase genetic variation indirectly? toxins predator-prey relationships competition new
ra1l [238]

Answer:

Toxins, New Habitat, Increased Food Supply

Explanation:

Edgu 2020

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What behavioral adaptation do otters use to eat shelled animals?
zysi [14]

Answer:When a sea otter eats they use rocks to get them shells open and to get them off the ocean floor. They floats belly up and use rocks to get them open. Once they get the shell open they eat the meat inside. This is one of their main ways of getting food.

Explanation:

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