Which condition is a biotic factor of an aquarium ecosystem?

A) Algae growing on the glass.

B) Gravel on the bottom of the aquarium.

C) Amount of oxygen in the water.

D) Temperature of the water.

Which of the following is true about natural selection? A. Natural selection does not cause a species to change. B. Natural selection is the only cause of changes in a species. C. Natural selection usually causes a species to change gradually. D.

Which is a correct association of protein types?

How did the use of coal affect human activity in the 1800s?

Inuit tribes in Alaska and Canada have hunted whales for many centuries. Which of these is NOT one of the reasons that their hunting practices have been sustainable for so long?

Which of the following statements regarding genotypes and phenotypes is false? Alleles are alternate forms of a gene. The expressed physical traits of an organism are called its phenotype. The genetic makeup of an organism constitutes its genotype.

Consider the following hypothetical scenario: An ancestral species of duck had a varied diet that included aquatic plants and terrestrial plants and insects. These ducks spent time on both land and water.

Cross a homozygous dominant individual for brown hair with an individual who is blond hair. remember the starting are the parental generation. What you are getting with results are the offspring (the F1 generation)

Identical twins look alike because their bodies contain identical

You can spread allergies to another person t/f

A volcanic eruption adds carbon dioxide to the air. This is an example of interactions between the 1) hydrosphere and geosphere 2) atmosphere and geosphere 3) geosphere and biosphere 4) hydrosphere and biosphere