Which of the following does not contribute to water pollution?
a. forestry
b. industry
c. agriculture
d. none of the above
user: which of the following typical adaptations of marine animals is not found in sea otters?
a. streamlined body
b. webbed hands and feet
c. body covered in thick fur
d. breathing apparatus on the top of the head

Question 1:
The answer is d. none of the above.

All mentioned factors contribute more or less to water pollution. Forestry, by removing trees from some area, increases the risk of erosion. The industry is a great water pollutant. Its facilities throw away waste into the water. Agriculture affects water quality by degrading Earth's surface and groundwater through erosion.


Question 2:
The answer is d. breathing apparatus on the top of the head.

Sea otters live both on land and in the water. They have streamlined body and webbed hands and feet, like the other marine mammals. They also have a thick fur. Since they can live on the land, they don't have breathing apparatus on the top of the head, like the other marine mammals (dolphins, whales) that cannot leave out the water.

1.989×10^30 kg is the weight of the sun.

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.