Which value most closely represents the amount of freshwater on Earth, as a percentage of the total water on Earth? 71 percent 50 percent 12 percent 2 percent

What is a complete protein? A. A complete protein is a food source that contains all the essential amino acids. B. A complete protein is a food source such as vegetables and legumes. C.

Sensory receptors that are located in the skin and sense touch, pain, heat, and cold are called: Answer a. Mechanoreceptors b. Chemoreceptors c. Osmoreceptors d. Photoreceptors

The Black Rhino Characteristics of this animal Where is it originally from? Why is it becoming endangered? (poaching, habitat loss,) How many are left? Where can it be found today? Why should young people care?

The law of__ states that traits are passed from parents to offspring independent of one another

What would a scientist's next step be if his/her data supported his/her hypothesis

Any statements about optimal population are inevitably culturally determined. a. True b. False

How do body systems work?

The carbon dioxide that we exhale is produced by what process? A. Calvin cycle B. Glycolysis C. Krebs cycle D. Photosynthesis

Is cell mediated or humoral immunity essential to control a mycobacterium infection?

A frog lays thousands of eggs because many eggs die. This behavior is an example of a) competition b) overproduction c) variation in a population d) survival of the fittist