Answer:
<em>As scientists learned more about genetics and biochemistry , some organisms were moved out of existing kingdoms and into new ones.</em>
Explanation:
As the researches in the scientific world continued, scientists realized that there were, in fact, many genetic diversities present in organisms which were placed in the same groups. Hence, they realized that due to these differences these organisms should not be kept in the same group. As a result, the groups in the classification system increased.
Carolus Linnaeus just grouped organisms based on their features. But today, scientists classify organisms based on various perspectives such as the evolutionary history, genetic similarities etc.
Answer:
The salt in the oceans comes from weathering and the erosion of the earth's crust.
Explanation:
The weathering can be described as the breaking down of rocks.
During the weathering of rocks, minerals will be dissolved from the land and salt is one of them. These minerals (salt included) will then be delivered into the oceans by erosion of the Earth's crust.
Erosion can be aided by wind, ice or water. Erosion removed weathered materials. When these weathered materials are removed, new materials (rocks) will be exposed to weathering thereby promoting continuous weathering processes
Answer:
Kangaroos from desert and semi-arid environments have adapted to drier conditions and have several features that help them deal with the lack of water. Kangaroos need very little water to survive. Kangaroos hop over large distances to find food and water. Hopping is a fast, energy efficient way to travel. Kangaroos need very little water to survive and are capable of going for months without drinking at all. The kangaroo usually rests in the shade during the day and comes out to eat in the late afternoon and night when its much cooler. It eats mostly grass. It needs very little water to survive.
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