Answer:
If the water is initially hot, cooled water at the bottom is denser than the hot water at the top, so no convection will occur and the bottom part will start freezing while the top is still warm. This effect, combined with the evaporation effect, may make hot water freeze faster than cold water in some cases.
Explanation:
Answer:
B..........................
Answer:
In the process of photosynthesis, trees tend to take up carbon dioxide and water and convert it into oxygen and glucose. In this way, trees help in reducing the amount of carbon dioxide from the air which is otherwise a source of global warming. The process of photosynthesis also yields oxygen which is beneficial for life on earth.
The trees also store carbon inside them hence, reducing global warming. The more the trees, the more will be the chances of carbon being reduced from the atmosphere and being stored in the trees.
Plant processes like transpiration help to lower the temperature around them. Hence, more the trees, lesser will be the rise in temperature.
The number of organsims at each levels, so there are more producer than herbivores, more herbivores than carnivores and so on...
Answer:
Active transport
Explanation:
Diffusion is when particles (like perfume) spread out everywhere from an area where there is a lot of it to where there is a little to none of it. Active transport is the opposite. A cell for example would use it's own energy to absorb nutrients when it already has quite a lot. Naturally diffusion would make the particles or nutrients go out of the cell because there is a lot of it inside the cell not outside, so active transport is used to absorb as much as the cell can from around it, even when it is full.
