How does the environment influence adaptations

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

Coral have a symbiotic relationship with what in order to eat?

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not