What is trace evidence

Seawater has many different gases dissolved in it, name at least three

What is the best microscope to use to examine the one-cell organisms in pond water

Cells are categorized as either prokaryotic or eukaryotic. classify the characteristics below as being unique to prokaryotic cells, common to both cell types, or unique to eukaryotic cells. move each description into the correct category.

Is oil or biomass abundant

The conversion of salt water into fresh water is

What is a function of the backbone in animals? A. It protects against predators. B. It regulates blood glucose. C. It surrounds the spinal cord. D. It limits movement.

Suppose a population is carrying a condition controlled by two alleles: R (dominant) and r (recessive).

The process when organisms reproduce, they pass their characteristics on to their offspring.

True or false? resource use per person is higher in the united states than it is in middle-income countries like china.

A chunk of an asteroid that has broken off in outer space is called a