A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
I think the correct answer from the choices listed above is option A. Directional selection can be distinguished from disruptive selection by the elimination of extreme variations of traits. Directional selection is a natural selection where an extreme phenotype is favored than others.
Explanation:
The synthesis of carbon dioxide and water is purely catalyzed by light energy from the sun. The light energy is used to synthesize useful organic molecules and produce oxygen gas.
- Photosynthesis is light catalyzed.
- Green plants manufacture their food using sunlight.
- A special pigment in plant called chlorophyl traps the sunlight.
- Carbon dioxide and water will react when the light energy from the sun is made available in plant leaves.
- This will then produce organic compounds with rich chemical energy.
- Oxygen gas is given off as a by product.
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Photosynthesis and respiration brainly.com/question/3437832
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The choice that is a complete protein is beans. Which is B. Beans contain a very high level of protein. Beans are legumes and legumes serve as a source of plant protein, which is why legumes are mostly protein. Hope i helped.
