Answer:
Synaptic cleft
Explanation:
Synapse is the region where the impulse is conducted between two neurons. This occurs because two neurons are in maximum possible proximity to each other at the synapse.
However, there is no physical contact between two neurons even at the synapse. And a small space is present between two neurons at synapse. This gap is called the synaptic cleft. The neurotransmitters are released in this cleft.
Speciation start to take place on a genetic level between two isolated populations by Allele frequencies change in different ways.
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The field of study called the population genetics helps us to understand about the composition of a selected population and the frequencies of alleles and how they get changed over a specific period of time. The mechanism called the adaptation mechanism ,mutation and gene flow determines the allele frequency changes in natural population.
Micro evolution refers to the changes in gene pool from one generation to another. Natural selection, mutation, genetic drift and gene flow are considered as the four forces of this evolution. When the allele frequencies starts to get changed in different ways, the Speciation starts to take place.
The correct answers are "cardiovascular diseases and cancer."
Cardiovascular diseases is a classification of illnesses that involves the heart and the blood vessels of the body, which may sometimes lead to a heart attack. While cancer is described as an abnormal cell growth inside the body of a person causing an invasion of a specific part or organ of the body, which may also spread if not treated well. The most common cancer for men is the prostate cancer, on the other hand, the common cancer seen in females is breast cancer.
B) dissolving sugar in water
