A cell is if it lacks a nucleus and membrane-bound organelles.
A. autotrophic
prokaryotic
eukaryotic
O D. heterotrophic

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?