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Fossils are the sources to learn the changes on the earth and how much it changed in these years. Its provides us with information about the existence of plant and animals in the past.
Actually, the fossils we found till the date are the ancestors of the plants and animals that live today. Moreover, some fossils of animals are easily identifiable since they exist till the date.
But there are fossils of animals that exist no longer in the earth. By studying and analyzing the fossils, one can tell how life on the earth has changed.
Also, we can learn about the ancestors of the plants and animals and how their long life existed on earth.
In other words, one can learn where and how those organisms were lived. So that we can know about our ancient environments.
A, the cytoplasm is the jelly-like substance that suspends the organelles and provides structure for the cell.
Both genetic engineering and artificial selection allow humans to change a species so that its members are better suited for human needs.
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The guanaco is camelid native to South America, closely related to the llama. Its name comes from the Quechua world huanaco. Young guanacos are called chulengos. One of the adaptation of this animal is to socialize. They are garrulous folk, living in herds usually composed of up to ten female, their young, and one dominant male. Baby guancos are adorable and the little four-legged ones can walk competently only five minutes after birth. Female guancos have a lengthy eleven-and-a-half month gestation period, after which a single chulengo is born between the South American summer months of December and March.
Explanation:
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<span>Thyroid and Parathyroid Glands. The thyroid is a dual lobed gland located in the neck region. It secretes hormones that control metabolism, growth, heart rate, body temperature, and regulate calcium levels. Hormones secreted by the thyroid include thyroxin, diiodothyronine, and calcitonin.</span>
