Lipids, Although there is four classes of macromolecules that constitute all living matter: Carbohydrates, Lipids, Proteins, and Nucleic acids. Best answer i'd go with is, Lipids.
The level of carbon dioxide in the atmosphere is maintained by several processes, including photosynthesis, respiration and combustion. Green plants remove carbon dioxide from the atmosphere by photosynthesis. Therefore, planting many green plants would remove carbon dioxide from the atmospheres. Additionally, Efficiency and conservation is among the practices that would reduce the consumption of carbon based fuels such as natural gas, oil coal and gasoline, thus decreasing carbon dioxide emissions.
Answer:
DNA is the recipe for how to build your body's proteins and mRNA is an index card it copies the DNA but doesn't have to stay in the nucleus. (1st option)
Explanation:
DNA carries genetic instructions for developing, growing and reproducing all known organisms and many viruses. mRNA, on the other hand, collects the DNA's instruction to the cells' protein-making part.
Oxygen makes up 20% of the atmosphere while nitrogen makes up 78%. The other two percent is made up of other gases. Population growth would slow. Organisms need water to survive and if there is a limited amount of water, populations will decline.
Answer:
3. Cells are the basic units of all living things.
Explanation: