Which of the following statements is true?

97% of the Earth's water is fresh water.

30.1% of the Earth's water is salt water.

97% of the Earth's water is salt water.

0.3% of the Earth's water is fresh water.

The movement of two different solutes in opposite directions across the plasma membrane is called

Which principle states that animals succeed each other in a definite sequence?

A group of organisms that are all of the same species living in the same area and interacting with each other is called A. a population B. a community C. a biome D. an ecosystem

Come up with one significant example of artificial selection and not natural selection. Explain why/how it has changed the specifies?

On what basis is ecological succession classified into primary and secondary? A) the type of plant communities involved B) the animal species inhabiting the area C) the time required for the succession to occur D) the reason the succession started

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