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Scorpion4ik [409]
3 years ago
13

Describe Charles Darwin's theory of natural selection

Biology
2 answers:
malfutka [58]3 years ago
3 0

Answer:

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Explanation:

Karo-lina-s [1.5K]3 years ago
3 0

Answer:

Explanation:

Darwin's Theory of Evolution by Natural Selection

More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.Charles Darwin's theory of evolution states that evolution happens by natural selection. Individuals in a species show variation in physical characteristics. ... As a consequence those individuals most suited to their environment survive and, given enough time, the species will gradually evolve.

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Sveta_85 [38]

Answer:

The correct answer will be option-C

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The rhythm of the heartbeat is controlled by the pacemaker of the heart called the sino-atrial node.

The SA node generates action potentials which trigger the contraction and relaxation of the atrium and ventricles. The membrane potential generation initiates by the depolarization of the cell membrane when the L type of Ca⁺² ions opens up and calcium ions enter the cell.

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