Answer:
The function of chloroplasts is Photosynthesis
The cell wall is composed of cellulose fiber, polysaccharides, and proteins.
Answer:
energy comes from nutrition from our food. Matter comes from hydrogen
Explanation:
Answer:
Allele frequency can be described as a phenomenon which measure how common an allele is in a particular population. It tells about the genes which are richest in a gene pool and it also shows the genetic diversity in a population. Allele frequency is often expressed in percentages.
Natural selection tends to favour those organisms that are best adapted to live in an environment and which can withstand changes occurring in the ecosystem. If due to some circumstances, a trait becomes less useful to organisms in a population then by natural selection the allele frequency for those alleles will reduce with time. Similarly, the alleles which code for better genes for an environmental change will be increased due to the phenomenon of natural selection.
Explanation:
first question: Coal is mainly found in three regions: the Appalachian coal region, the Interior coal region, and the Western coal region (includes the Powder River Basin). The two largest coal mines in the United States are the North Antelope Rochelle and Black Thunder mines in Wyoming.
second question:All of the geothermal plants in the United States are located in the western part of the country, mostly in California or Nevada. California has 91% of the country's steam-powered capacity, and 65% of binary-cycle capacity is found in Nevada.
