Primary and secondary air pollutants can co-exist in the atmosphere.

a. True

b. False

why do plant cells that transport water against the force of gravity contain many more mitochondria that other plant cells

Which of the following is neutrally charged? A) an ion B) a compound C) an electron D) a proton

Which abiotic factor is most likely in a desert? a. a primary consumer b. wind c. a top predator d. a snake

Breeders that cross genetically different individuals in hope of producing organisms with multiple desirable traits are using a technique called a. cloning b. hybridization c. genetic engineering d. inbreeding

Al + O2 - --> Al2O3 Balance the chemical equation.

Can I change or modify my D. N. A through eating or digesting someone elses hair?

At the end of meiosis 2, How does the DNA in each of the four new cells compare to the DNA from the original cell?

How fast molecules are moving?

Explain the four main characteristics of hazardous waste.

The physical interaction between the respiratory and the cardiovascular system takes place at which respiratory structure in a human? a, brochioles b. alveoli c. bronchi d, respiratory vessels e, gill filaments