Which of the following statements about water are true? Check all that apply.
Water covers 75% of the Earth
Once water is used it can never be reused.
Only 3% of Earth's water is fresh water.
Water comprises the majority of all plants and animals

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.