Question 17 cholesterol is a fully saturated triglyceride. highly unsaturated triglyceride. fatty acid. steroidal alcohol.

Cholesterol is an important organic molecule biosynthesized by all animal cells because it is an essential structural component of cell membranes. Its function in the membrane is to maintain membrane structural integrity and fluidity and to change cell’s shape rapidly. Cholesterol is a precursor for the biosynthesis of steroid hormones and vitamin D and bile acid.

vote read

explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.