Major organs begin to develop during which part of human gestation?
fertilization
first trimester
second trimester
third trimester

first trimester

Explanation:

During the first trimester, the baby's major organs begin to develop. This happens specifically in the second month of pregnancy.

The second month of pregnancy (first trimester) is especially critical for the baby's development. Any problem with drugs, viruses, or environmental factors such as pesticides can cause birth defects.

Baby's development is very rapid during the second month and by the end of this month, all major organ and systems including brain, lungs, liver, and stomach will have begun to develop. The first bone cells appear. The eyelids form and grow, but are closed immediately and the ears are formed. The ankles, big toe, wrists, toes, and sexual organ develop.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation: