The correct answer is A. It was in my biology studyguide and also all these coil and gasses pollute the air that is why we are trying to become electrical
its my pleasure to help over and out : )
<span>The geologic time scale is divided into periods, which are then divided into epochs, which are further divided into ages. For example, the time of the dinosaurs lasted 3 periods (Triassic, Jurassic, Cretaceous), each period had 3 epochs (late, early, middle), and each age fit into one of those. Many epochs have more than 1 age associated with them.
As for the basis for differentiating the eras, I'm not so sure. The only one I can say for sure is the end of the Cretaceous, which is when the dinosaurs suddenly became extinct due to a meteor impact. I think the divisions are based on significant, global-scale events that changed the world.
Sorry its so long but that the answer i think >:) ur welcome
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Answer:
(i)
x= nucleus
y= chloroplasts
z= vacuole
(ii)
1) an animal cell does not contain a vacuole but a plant cell does
2) a plant cell contains chloroplasts but an animal cell does not
Answer:
The thermostatic control center in the hypothalamus.
Explanation:
In the hypothalamus, a control area presents which controls the temperature of the body. Primary motor center for shivering present in the posterior hypothalamus which is continuously inhibited by heat signals which come from the heart center present in the anterior hypothalamus. But when the body felt cold than from the skin and spinal code signals generated and excite the shivering area. The body starts shivering which involves muscles of the body.
Answer: organic compounds
