<span>When we are talking about biogeochemical cycles we are talking about the pathways by which a chemical substance moves through both the biosphere and the atmosphere. There are a number of cycles which come back to the starting point and which can be repeated. Moreover, the very term biogeochemical tells us that there are more than one factor involved. We have chemical, biological and geological factors at play. The circulation of chemical nutrients through the biological and physical world are known as biogeochemical cycles.</span>
The answer is peroxisomes.
<span>Cells that specialize in breaking down harmful by-products of metabolism need to have a lot of peroxisomes.
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Peroxisomes are <span>small organelles that contain enzymes involved metabolic reactions. They breakdown </span><span>substrates like uric acid, amino acids, and fatty acids.</span>
Water exists as a solid at or below 0 degree Celsius.
At 0 degree Celsius, water can go through a phase change, either freezing or melting, depending whether energy is given or taken away. If the temperature is below 0, water should exist as solid as the temperature is lower than its melting point. If the temperature is right at 0 degree, the water can partially be solid and liquid at the same time, during phase change.
Therefore, water exists as solid at or below 0 degree Celsius.
Answer:a positive feedback
Explanation: positive feedback is a type of feedback mechanism employed by the body,in which an output is enhanced or acclerated.
In contrast to negative feedback where the body regulates it's internal conditions by reducing the effect of a stimuli,In positive feedback ,the body enhances the effect of the stimuli.
It is not common as negative feedback in homeostasis.
An example is the increasing release of oxytocin to promote contractions during childbirth,until the child is born.
Another example is the accumulation of blood platelet , in the site of blood vessels injury to
cause blood clotting.
Answer:
E
Explanation:
The picture shown is the cell membrane made of a phospholipid bilayer and proteins embedded. The phospholipid bilayer is made up of hydrophilic (attracted to water) phosphate heads (D), and hydrophobic (repelled by water) tails (E)
The hydrophobic tails face in the way towards each other, while the heads point outwards towards the cell/extracellular environment.
This is because the hydrophobic tails form a conformation that minimizes their contact with water. So you are least likely to find water at E