Answer:
The answer is the dropping pH of the ocean
Explanation:
The ocean absorbs tons of carbon dioxide (Co2) from the atmosphere which changes the chemistry of the water. The ocean is naturally Alkaline but, as the oceans absorb Co2 it turns into carbolic acid. This doesn't make the ocean's immediately acidic but it is causing them to be gradually less alkaline. Since the direction of change is near the acid end of the scale, the process is known as ocean acidification. The coral reefs need the alkaline environment and can feel when the environment changes and when the ocean becomes to acidic for them it kills off the coral.
Neuron is the correct answer. They form a network that is connected to the brain through the spinal cord. This results in an impulse which allows you to do whatever it is you have to do.
1. Biosphere
2. Lithosphere
3. All of the above
4. i dont know
Lactobacillus is the answer for this question
