Answer:
Mutations and sexual reproduction is the right answer
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An atom consists of an atomic nucleus composed of positively charged protons and neutral or uncharged neutrons.
Answer:
React on cell surfaces, catalyze reactions.
ACTH (Adrenocorticotrophic hormone) stimulates the adrenal glands to secrete its hormones.
hGH (Human growth hormone) also known as somatotrophic hormone is responsible for the growth of long bones, muscles and viscera.
TSH (Thyroid stimulating hormone) influences the structure of the thyroid and causes it to secrete thyroid hormone.
A embryo is the unborn child from when they were conceived to 10 weeks and fetus is the unborn child from 11 weeks till birth
