By definition, an aquifer is

Data must be considered valid for scientists to trust conclusions. Which is the best way to increase the validity of data in an experiment? A. Get many scientists' opinions of the data. B. Measure data in Sl units. C. Carry out two or fewer trials.

For males, what is the first noticeable sign of puberty

The scientific method is limited to investigating phenomena that are (Select all that apply) Observable Visible Measurble Repeatable Falsifiable

What system is represented by red blood cells, white blood cells, plasma and platelets?

In two or more sentences, explain how DNA replicates, including what percentage of the replicated strand is new vs. old.

A population of lizards that originally had no predators lived on a small isolated island. Predators of the lizards were accidently introduced to the island from a visiting ship.

If there are 50 kcal of energy in the tertiary consumer trophic level, how many kcal would you expect to find in the primary consumer level

The plasma membranes of some plant cells use transport proteins to move protons out of the cell against their concentration gradient (from areas of low proton concentration to areas of high proton concentration). this is an example of:

What is algae? and where is come from?

Are mushrooms biotic or abiotic