Essay Choose one item from the following list. Research the topic and then list at least five different system interactions for that topic.

Acid rain
Amazon deforestation
Drought
Flooding
Gulf of Mexico oil spill
Hurricane Katrina
Salt water intrusion
Thermal islands
Tsunami
Wind farm development
Yellowstone fires
Yucatan meteor

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them