<span>This is an example of facilitated diffusion using a channel. Diffusion is the process of an object moving across a concentration gradient, usually from areas of higher to lower concentration in membranes. In this case, the diffusion is "facilitated" by the aquaporin molecules and water is allowed to enter or exit the membrane based on concentration level.</span>
Atmosphere and climate. There are several hypotheses about the nature and cause of the Carboniferous Rainforest Collapse, some of which include climate change. ... The carboniferous period is characterised by the formation of coal deposits which were formed within a context of the removal of atmospheric carbon.
Answer:
Volcanoes go dormant because magma from the Earth's mantle can no longer reach the volcano.
The landform nearest to it is rocky mainly consist of igneous and metamorphic rocks.
A dormant volcano is an active volcano that is not erupting, but supposed to erupt again and it's also called the "sleeping giant"
Explanation:
Answer:
They regulate the cell cycle by phosphorylating other proteins
Explanation:
they are serine-threonine kinases, they play an important role in the phosphorylation of other proteins. Cyclin-CDK complexes phosphorylate substrates appropriate for a particular cell cycle phase and without that, the cycle cannot continue.
