Natural selection does not

A. make species stronger over time

B. select what a species needs

C. cause changes in a population

D. increase how often favorable traits are passed on

Which halogen is a fatal poisonous gas, but is put in drinking water and swimming pools to prevent serious diseases?

Which of the following are necessary for a seed to germinate? A) moisture content of seed must be at least 9% B) Moisture content of the seed must be less than 9% C) certain enzymes in the seed are activated temperature must be above 80 degrees D)

What is one reason that bacteria can be harmful

How does current affect biodiversity in rivers and streams? a. It prevents bacteria and algae from living in rivers and streams. b. It causes a decrease in biodiversity by preventing organisms from remaining in rivers and streams. c.

Key information in DNA specifies the sequence of amino acid subunits that will compose enzymes and other proteins in the cell.

Why is sti considered a scientifically controversial strategy?

What would most likely happen to the carbon cycle if here were no more plants on earth

Research scientists are trying to clone a gene. In order to accomplish this task they join two pieces of DNA. Which class of the enzymes below might accomplish this task? A: oxidoreductase B: ligase C: hydrolase D: isomerase E: lyase

What terminology would the nurse use to document a newborn who weighs 4,000 grams (8.13 lb) or more at birth?

Why does a caterpillar use captured light energy