The microscope uses multiple glass lenses to distinguish details of thickness.
a. optical
b. dark
c. electron
d. compound

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?