Friction in machines is commonly reduced by using

If a frog is not attracted to another frog's croak, and never breed. What type of isolation is this?

Approximately 60% of human genes are also found in fruit flies. About 97.5% of human genes are also found in mice. What does this evidence suggest?

What are the functions of cholesterol molecules embedded in the lipid Bylayer

Which list of details describes the viviparous mode of reproduction? A. internal fertilization, development of an embryo within the female body, and the developing embryo deriving nourishment from its mother B.

1. Butter is an example of A/a carbohydrate. B/a polar molecule. C/ D/a saturated fat. an unsaturated fat.

Most of cellular respiration take place in what

An ocean trench forms when?

The fact that a strain of yeast with a certain defective gene can use the human version of the gene to repair itself is evidence that yeast and humans

What is the difference between a meteor and a meteorite? A meteor has more mass A meteorite reaches Earth and has not burned up A meteorite orbits the sun and a meteor does not A meteorite glows

Which of these was NOT characteristic of the first cells on Earth? A) anaerobic B) prokaryotic C) single-celled D) contained organelles