B. the test tube
C. the x-ray machine
D. the light microscope
Answer:
Secondary succession generally occurs at the places where there was a previously established ecosystem.
The ecosystem that is destroyed due to some human activities or some natural disasters such as forest fire, flood et cetera.
This leads to the secondary succession where there was pressence of an ecosystem sometime before.
The alimentary canal is also called a food pipe, it is connected to the mouth, through which the food and liquid are transported in the body.
An alimentary canal is a thin canal that is attached to the mouth from one end and to the stomach with another end. It transfers food and liquid to the stomach and is also used for breath when the nose is blocked.
The alimentary canal is a hollow muscular tube that is a part of the digestive system. The food present in the mouth gets into the stomach through this canal.
Thus, the alimentary canal, commonly known as the "food pipe," connects to the mouth and is the passageway for food and liquid into the body.
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-They are made from extremely expensive materials.
-They have very few uses.
-They are dangerous to use.
Answer:
They perform well only at very low temperatures.
Explanation:
it was on my test
O 30%
O 38%
O 50%
O 63%
A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. The porosity of the soil is 50%. Thus, option C is correct.
Forest soil has more moisture than sandy soil therefore the types of plants that are grown in soil of forests are more qualitative and more superior than the sandy plants which are facing certain limitations and facing certain situations.
Forest soil supports plant life, but sandy soil does not support any plants. Forest soil produces more superior life and the plants life are found in the forest area and the sandy plants are lesser found in the sandy areas.
The reason for vegetation in forests is because of the supportive factors that are involved in the good plants life. The soil type that is the richest in organic material would be a dark-colored soil. Decaying matter turns brownish-black which makes this type of soil having a dark color even almost black.
Therefore, A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. The porosity of the soil is 50%. Thus, option C is correct.
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Answer:
answer is 50
Explanation:
i gess on quiz and it was correct
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