Which of the following is considered to be the most critical period of prenatal development?
a. embryonic period
b. germinal period
c. fetal perlod
d. neonatal period

Would really appreciate it, i have an idea but not completely sure

What is the main function of the central vacuole in a plant cell? a. absorbs energy from the sun to produce food b. holds water and maintains turgor pressure c. breaks down molecules to release energy d. contains the cell's genetic material

Earths energy sources include both renewable and nonrenewable resources. name at least three sources of energy that could be used in your house. then describe the ideal energy source for generating most of your homes electricity, and explain why you chose that source. can someone give me some ideas, i’m kinda confused.