The correct answer is "A. carbon, hydrogen, oxygen and nitrogen".
Scientists believe that out of the 116 known elements, only 25 are used
by mammals (and therefore by humans). Out of the 25 elements that are
believed by scientists to support human life, only four of these
elements - carbon, oxygen, hydrogen, and nitrogen - make up about 96% of
the human body and are found in the basic structure of all biochemical
molecules within the human body. Because of this, carbon, hydrogen,
oxygen, and nitrogen are considered "the four essential elements"
supporting human life. However, it is also important to keep in mind
that although many of the other 25 elements present in the human body
are required in only small amounts, they play an important role in
keeping the body functioning correctly, as well.
Flannel shirt and oven mitt are insulator and iron skillet and copper pipe are conductor
New chemicals are produced so quickly that living things do not have time to adapt is Carson's thought which is denoted as option A.
<h3>What is Adaptation?</h3>
This is defined as changes in the physical and behavioural characteristics of an organism that help them to survive in the changing environment.
Carson believes that living things cannot adapt to overcome the new chemicals that human beings introduce to the natural world because they are produced so quickly that living things do not have time to adapt.
Read more about Adaptation here brainly.com/question/29594
No. Crocodilians are reptiles. and they are vertebrates, meaning they have a backbone. The answer is Lamprey.
