<span>The sun's heat supplies and is used in many earth processes such as life and temperature, maintaining balance.
1. Photosynthesis and sustain life
2. Climate and temperature
The one component in photosynthesis that can't be recycled but must be constantly available is </span>energy.
Light energy, mostly from sunlight,<span> is the main requirement for photosynthesis to occur. </span>
<span>Photosynthesis is a process wherein light energy is converted into chemical energy. </span>
<span>Chemical energy is generated to support the various activities of a plant or an organism.</span>
Answer:
A lot of factors cause genetic variation in a population. The root of all genetic variation is mutations, which occur randomly.
A lot of genetic variation in fact results during meiosis, the process by which gametes (sex/reproductive cells) are formed. The 3 main ways are crossing over, independent assortment of chromosomes, and random fertilization. Crossing over occurs during Prophase I of meiosis, in which genetic material is exchanged between nonsister chromatids of homologous chromosomes. Independent assortment refers to the following: When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other. Random fertilization is where any sperm can fertilize any egg cell. The many combinations of eggs and sperms mean variation.
Another source of genetic variation include gene flow. Gene flow is where populations have their members enter other populations (migration), influencing the gene pool of populations. This source is more controversial, however.
Random mating can also increase genetic variation.
Th polluting oh the ocean is a big concern for people because the animals the some people depend on for food are being killed.
