What process can cause water in aquifers to become brackish and unusable for agriculture?

A) volcanic activity

B) eutrophication

C) erosion

D) groundwater infiltration

Sexual reproduction in the parent cell will result in offspring with? a. similar genetic information b. half the genetic information c. double the genetic informtion d. four times the genetic information

What is the purpose of the mucus which lines the walls of the trachea

Which one of these statements about the human genome is true? a) 1.5% of DNA is 'junk' with no known function. b) Non protein-coding DNA controls which genes are switched on or off. c) Only 25% of DNA codes for proteins. d) There are 100 000 genes.

The water of a lakewill be most layered in which season

Children's long bones have growth plates called?

Why is DNA ligase so Important in recombinant DNA technology

What is the diffrence of pulmanary artery and pulmanary veins?

Do scientists Know what is causing El Niño?

Marie's pulse, breathing rate, and mental alertness have suddenly increased. it is likely that marie is experiencing the:

Many functions in the body are controlled by special compounds. Which statements about these compounds do you think are true? Check all that apply