How many chromosomes are in a human gamete

Which description refers to stratus clouds

How do the atmospheric conditions near the beginning of Precambrian time contrast with the atmospheeic conditions that are present now? Which organism is largely responsible for this change?

Where do solar prominences occur? a) photosphere b) radiative zone c) convection zone d) core

What happens when warm moist air collides with cool dry air?

Witch step of cellular respiration will not take place in the absence of oxygen

Is an octopus a invertebrate chordate

Birds and reptiles are both vertebrates that lay eggs but birds have beaks and reptiles have teeth. Occasionally birds have teeth but only in the embryonic stage. Which conclusion is best supported by the presence of teeth in bird embryos? A.

What were Charles Darwin's observations?

What is the by-product of fermentation in humans

Why do organisms have to compete for resources