Answer:
Knowing the evolutionary relationships among species allows scientists to choose appropriate organisms for the study of diseases, such as HIV. Scientists are even using the principles of natural selection to identify new drugs for detecting and treating diseases such as cancer. Environmental change and isolation of groups of organisms play an important role in evolution. Environmental change is any change in an environment to which an organism must adapt. Change can be gradual, such as when mountains or deserts form, other species die out, or new species evolve.
Explanation:
Answer:
Cerebrum
Explanation:
Memory is a complex process and the stored memory is the past experience of the human being. They are formed by thinking and different events done by the human.
The cerebrum of the brain involves thinking and memory. This is the largest part of the brain having different sub-parts. They are especially the hippocampus, temporal lobe, limbic system which involves different types of memory.
Cerebrum involves in hearing, speech, movement control, learning.
The limbic system is part of the cerebral cortex. It is concerned with emotion, behavior, memory.
The long term memory is dealt with by the hippocampus. This type of memory gets active when a person wants to recall something or memorize a thing for a long time.
The temporal lobe involves listening to a sound and store some short term memory. Other lobes of cerebrum involve sensory memory like vision, taste, smell, etc.
One of the major elements of natural selection is that all species have genetic variation. Natural selection is a process when organisms adapt better to their environment. It is an essential key in evolution. There is a change in phenotype of a population over time.
