Answer:
D. People who live in wealthier countries tend to consume more energy per person.
Explanation:
People in wealthy countries have access to many technologies such as phones, televisions, and house appliances like coffee makers. All of these use energy. Wealthy people also tend to have larger houses that require more electricity to light and heat/cool. People in developing countries do not have access to these technologies or large houses that consume large amounts of energy. Additionally, people in poverty are unable to afford the levels of energy that wealthy citizens can. For these reasons, wealthier countries consume more energy per person.
Corpus Callosum is a band of thick fibres which connects the hemispheres of the brain.
A) Crossing over is the mechanism of genetic variation that results from the exchange of gene segments between non-sister chomatids.
I believe it's lactic acid and energy.