B. an atom
Atoms are the basic units of matter and the defining structure of elements.
<u>Answer:</u>
Greenhouse gas refers to any gaseous compound in the atmosphere that can absorb infrared radiation, thereby trapping heat and keeping it in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming.
<u>Examples why greenhouse gases in the atmosphere:</u>
- farming cattle releases methane
- farming rice in paddy fields releases methane
- burning fossil fuels in vehicles and power stations releases carbon dioxide
- deforestation releases carbon dioxide and reduces the absorption of carbon dioxide through photosynthesis
Because longer life spans are bad for hormones and shorter are good for lungs.
Answer:
vitamins prteins minerals
Explanation:
Answer:
There are four chambers of the heart:
The two bottom chambers are the right ventricle and the left ventricle.
The two top chambers are the right atrium and the left atrium.
