Answer:
Schools are being closed until summer because of the coronavirus. When we go back to school we might have to wear masks. We might have to put hand sanitizer every 2 seconds.
Explanation:
Respirators mask are used to protect from exposure to airborne particles these type of mask fit the face very tight to protect. Surgical masks are used to put a a barrier from spit, splashed blood even they do not fit tightly therefor are not used for protection like respirators
All the substances which produce undesirable defects in a fetus during prenatal development are called Teratogens
<h3>What are teratogens?</h3>
Teratogens refers to those substances that may produce physical or functional defects in the fetus or embryo growing in a pregnant womanafter the pregnant woman has been exposed to suvh substances.
Examples of teratogens include:
- incompatible blood types,
- environmental pollutants,
- infectious diseases,
- nutritional deficiencies,
- maternal stress,
- advanced maternal and paternal age,
- and environmental pollutants
Therefore, all the substances which produce undesirable defects in a fetus during prenatal development are called Teratogens.
Learn more about teratogens at: brainly.com/question/6676255
Answer:
The tunica interna of blood vessels is made of endothelium and is supported by a subendothelial layer with a internal elastic lamina beneath.
Explanation:
Answer:
It is being used as fertilizer on a farmer's fields
