What kind of change causes iron to rust?

A state change

B physical change

C freezing reaction

D chemical change

Why is are invasive species a problem?

There can be advantages to using fossil fuels. What is one advantage? A) Fossil fuels are a nonrenewable source of energy, because they are primarily made from the remains of ancient plant and life matter.

The cells of the human body must have a lower sodium ion concentration and a higher potassium ion concentration than the blood carried by the circulatory system.

How are marsh grasses adapted to the dry regions in Texas

Which antibiotic is most effective against S. epidermidis and which antibiotic is least effective against S. epidermidis? Explain These are the choices ... 1-Chloramphenicol 2-Penicillin 3-Streptomycin 4-Erythromycin 5-Tetracycline

What are the two ways that carbon enters into the atmosphere?

If an animal cell is placed in distilled water, it will A) remain the same size. B) shrink. C) swell and eventually explode. D) swell, but stop when the cell wall prevents further expansion.

What atre three types of nerve fibers?

The end products of pyrimidine catabolism are a. None of the answers given is correct b. uric acid and glycolic acid c. beta-alanine and beta-aminoisobutyrate d. uric acid and allantoin e. beta-alanine and alpha-ketoglutarate

It is okay to use words for the equations, but you also need to write down the actual formula that includes the chemical compounds as found in the lessons.