Answer:
Option (3).
Explanation:
Teratogens may be defined as the chemicals that can cause birth defects in the fetus. Substances like alcohol, lead and nicotine acts as the main agents of tertaogens.
Shamona is drinking water that contains high level of lead. The element lead is harmful for the fetus. Even the small concentration of lead is enough to cause birth defects. The lead exposure can cause the abnormal development of brain and damages the brain of fetus. The fetus has low birth weight also.
Thus, the correct answer is option (3).
The first step to DNA replication is to unzip the double matrix which also means that they will break the double matrix.
They can sting you if they feel harmed or they can give you honey
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
Answer:
I think the answer is A. the complementary shapes of an enzyme and a substrate.
Explanation:
I hope this helps! Correct me if I am wrong.
