Very cold periods in earths history resulted in which of the following?

deposits of pollen

tree rings

sunspots

glaciers

Which nutrients often limit the distribution and abundance of photosynthetic organisms?

What type of succession do you think is displayed in the case of Mount Saint Helens? Why? O Primary succession because there is soil left O Primary succession because the lava wiped away all the soil, leaving bare rock Secondary succession because

The cause of humanity's increased water consumption is an increased population. What is the effect?

Describe some of the physical factors involved of a culture medium

How is a specific enzyme able to catalyze a specific reaction?

A river's discharge is generally greatest

Devolution describes a process through which

Why is it important for a cell to regulate protein production?

Is it better to clean dishes with cold or hot water? why?

In a breed of mice gray fur is dominant to white fur what letters will be used to represent the gray and white alleles