Which mechanism affected the gene pool of the immigrants that entered the United States through Ellis Island?

- genetic drift

- gene flow

- gene mutation

- natural selection

Which force is a contact force? a. the force produced by interactions between electrically charged objects. b. the force produced by interactions between two masses. c. the force of attraction between two masses. d.

This mineral forms in layers that can be peeled off A. Mica B. Gold C. Pyrite D. corundum

Where do growers harvest cells when cloning orchids?

Name an organelle that stores large amounts of calcium.

The baby was born with six fingers on her right hand. she has:

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

What type of blood vessels join arteries to veins