When you go to check on your sleeping child, you observe that his eyes are moving back and forth rapidly under his eyelids. it is likely that he is?

How are complementary strands of dna held together?

A stem growing upward is an __ response to light

What are the four main steps of primary succession

Lotions applied during winter season moisturize the skin very quickly. What could be the reason for this?

Consider the nucleic acid molecule shown here. You can tell from this illustration that the molecule A) may be either DNA or RNA. B) is RNA and it contains sugar ribose. C) is DNA and it contains the sugar ribose.

Why do we need to cut our hair and finger nails?

Which is the most accurate statement about ferns? a) Ferns belong to the same phylum as moss. b) Ferns are nonvascular plants. c) Ferns developed after mosses appeared. d) Scientists have found several hundred species of ferns.

How are most decomposition reactions initiated

Which process is cause of variation in a species?

Which layer of soil is least likely to be penetrated by plant roots? a. O (organic matter) b. A (topsoil) c. B (subsoil) d. C (parent rock)