Answer:
Scientists can use embryology to determine that many organisms have common ancestors.
Explanation:
Proteins help form immunoglobulins, or antibodies, to fight infection. Antibodies are proteins in your blood that help protect your body from harmful invaders like bacteria and viruses. When these foreign invaders enter your cells, your body produces antibodies that tag them for elimination.
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<span>DNA are made up of genes and genes are made up of chromosomes.</span>
The polar head of a phospholipid is made of phosphate. The polar head has a negative charge that is made up of phosphate molecules. This polar region attracts water and is positioned outward to interact with the water.
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The layer B above the surface of the earth can be identified as the mesosphere. It is a layer of earth’s atmosphere which is located above the stratosphere and below the thermosphere. The characteristic features of mesosphere are as follows-
1. In mesosphere, the temperature decreases as the altitude increases due to the decreasing absorption of the solar radiation.
2. Mesosphere extends from 50 to 85 km above our planet earth.
3. The top of the mesosphere is called the mesopause which is the coldest part of the earth’s atmosphere.
4. The noctilucent clouds or the night-shining clouds are located in the mesosphere.
