<span>A single tree absorbs tons of carbon dioxide in its 30-year life cycle and it releases a ton of oxygen. The free nitrogen from the atmosphere is captured by the nitrogen-fixing bacteria and it converts nitrogen into nitrates and nitrites which is then absorbed by the plants. Trees, like all organisms, grow by adding mass (biomass). Carbon is the central ingredient in making that new biomass. Tree biomass is comprised of all parts of the tree; leaves, stems, branches, roots, tree trunks. The biomass of the woody tissue in the tree pictured on the right is made mostly of cellulose, a carbon compound. In a process called carbon fixation, plants transform CO2, an inorganic carbon compound into organic carbon compounds.</span>
Answer:
the number of individual organisms born into a population in a given year - Birth rate
the movement of individuals out of a population - Emigration
the number of individual organisms that die in a population in a given year - Death rate
the movement of individuals into a population - Immigration
Explanation:
The birth rate describes the frequency of live births in a population. In contrast, the death rate, also called the mortality rate is the number of deaths in a population. They are usually reported as a number per 1000 people, per year.
Migration is the movement of organisms. Immigration is used to describe the act of organisms in a population into a new destination. Emigration is the act of organisms leaving their current population
Answer is D. natural selection
Answer: Both
Explanation:
The molecules will move unless the water is frozen
