Answer:
Explanation:
Clean energy are renewable energy. This are energy from natural sources that are renewed without extra cost. Sun, wind, water are examples of renewable natural resources that helps generate clean energy.
The energy are refer to as clean because, they do not lead to any deposit of gasses that can affect the environment leading to environmental pollution. They have little or no side effects, no combustions or release of gases that are toxic or can deplete the environment as in the case of non- renewable energy.
Natural Selection Theory: The Natural Selection Theory is given by Charles Darwin. There are 3 principles of Natural Selection Theory
Variation, Heredity, Selection.
Explanation:
Natural Selection is the cause of evolution. The adaptation to the environment is the key to survival according to Charles Darwin.
The story behind Natural Selection is his visit to Galapagos Islands in 1835. Here he noticed the finches of different varieties in their beaks and food sources adapted to different environments i.e from different islands. This pushed him to think about those adaptations and eventually theory of natural selection.
The answer is the first one A
Answer: motility, ion transport associated with secretion and absorption, and gastrointestinal blood flow.
Explanation:
The nervous system exerts a profound influence on all digestive processes, namely motility, ion transport associated with secretion and absorption, and gastrointestinal blood flow. The magnitude and complexity of the enteric nervous system is immense - it contains as many neurons as the spinal cord.
