Answer:
Mutations contribute to genetic variation within species. Mutations can also be inherited, particularly if they have a positive effect. For example, the disorder sickle cell anaemia is caused by a mutation in the gene that instructs the building of a protein called hemoglobin.
Explanation:
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Answer:
The last choice. Think of planets, the bigger they are, the stronger they attract to one another
Explanation:
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The redness of the skin caused by blood vessels is called Erythema. Erythema is also the redness of the skin caused by increased blood flow in capillaries. Skin injury, Skin infection or Skin inflammation are an example of cases that the erythema may occur. it is also defined as abnormal redness on the surface of the skin usually caused by skin irritation or congestion of the capillaries. The redness on the surface of the skin of the infected person is an example of erythema. There are many causes of skin redness that the people can get example are irritation, sunburn, skin rashes caused by allergic reaction, and much more.
Explanation:
A wheelchair ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height.
Answer:
poliinators and flagellated sperm
Explanation:
Cycads (phylum Cycadophyta) together with Ginkgophyta, Gnetophyta, Pinophyta, Pteridospermales and Cordaitales belong to the gymnosperms (naked seed-producing plants). They are different than angiosperms which produce encased seeds within an ovary.
Cycads (but also Ginkgo) produce swimming sperm that is different than all other groups which produce sperm without swimming flagella.
Also, unlike other groups of gymnosperms, cycads have specialized pollinators, beetls.