The process in which populations change over time O Ecology
O Natural selection
O Evolution
O Mutation

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.

How do the sperm cells get from the stigma to the ovules?