To be useful in the scientific method, an observation must be: a. proven. b. measurable. c. definite. d. metaphysical. e. hypothetical.

How far is the earth from the sun?

The size of an animal's territory depends more on the type of food the animals eats than on the size of the animal. Explain why?

What is the juxtaglomerular complex? a system for diluting urine a system for concentrating urine a system that protects the nephron from some chemicals found in blood a system that regulates the rate of filtrate formation and systemic blood

What does it mean that human blood groups are codominant

A new mother should visit what type of physician

Why don't absorptive surfaces of the small intestine get damaged by the acids from the stomach?

For any gene, when there are two alleles, and the frequency of one of the alleles is 0.5, then the frequency of the other one is:

Suppose a large number of dead fish are found floating in a lake. how would you determine whether they died from cultural eutrophication or from exposure to toxic chemicals?

Which best explains how gravity contributes to the formation of layers in protoplanets? Gravity attracts materials and causes compaction, which produces heat and leads to the melting, sinking, and rising of materials.

1. As an object moves towards another object the sound waves bunch up. True Or False 2. As an object moves toward another object the sound waves have lower frequency. True or False. 3.