Answer: D). Most rocks are a mixture of minerals
Rocks are the natural substances these are the aggregate of one or more number of minerals. These minerals are responsible for chemical and physical nature of rocks. These are responsible for type of particles, texture of particles and overall rock structure. Example of rock having mineral aggregate is granite which is a combination of minerals like quartz, biotite and feldspar.
Answer:
Sympathetic Nervous System
Explanation:
The main function of the sympathetic nervous system is to stimulate the fight or flight response.
Hello the answer is the bacterium Streptococcus mutants that causes dental plaque formation.
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Answer:
The description indicates that Genetic variation is decreasing
The reasoning is that SEM is progressively smaller
Explanation:
Genetic variation decreases when organisms mate between relatives
Primary succession is a method of fertilizing soil that was barren and had never supported plant life, for example soil left over by a moved glacier of lava.
The soil is first "normalized", using pioneer species such as lichens, algae and fungi.
After this, plants able to survive in less harsh conditions such as grasses.
Therefore, the fertility of soil during early years of primary succession does not increase much and it is a process that involves a long period of time.
