Answer:
Vitamins A and D are added to margarine during production so it will have a similar vitamin level to butter. Nutrients may also be added to foods to fortify or enrich them even if the vitamins and minerals added are not normally contained in that food.Margarine makes an important nutritional contribution to the diet by being a source of one or more essential fat-soluble vitamins such as vitamins A and/or D and by being low in saturated fat.
Answer:
We can tell that extinctions have occurred in the past by looking at fossils in layers of sediments. If the amount of fossils found match you can infer that they are the same organism and they are extinct. If you can't match up the bones with any animal today.
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The picture is not clear !
Glucagon and insulin have antagonistic effects, with glucagon promoting glucose production and release into the bloodstream, and insulin promoting the transport of glucose into cells from the bloodstream and inhibiting glucose production. In which way this two component work together to make sure your still at homeostasis.
Dendrite.
A dendrite is a projection from a neuron that propagates to the cell body the electrochemical stimulation it receives from other neurons.
Dendrites were first described by Wilhelm His, in 1889,<span> as the "protoplasmic processes" that come from a neuron. Later, </span>Otto Friedrich Karl Deiters distinguished the axon from the dendrites as another different structure.