I think the correct answer from the choices listed above is option B. During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will <span>stop moving across the membrane. This is because equilibrium has already been achieved and there is no more driving force which is the concentration gradient present.</span>
Rachel Carson played a key role in the birth of environmentalism in the 20th century.
She became increasingly aware of the harmful facts of insecticide DDT on the environment. This compelled her to write her most famous work Silent Spring and defending herself against attacks from commercial interests.
The book also played an influential part in persuading governments to ban or heavily restrict the use of DDT and similar chemicals that persist in the environment.
<span>Margarine contains unsaturated good fats as it is made from vegetable oils. This helps to lower lipoprotein or bad cholesterol.But butter is made from animal fat which contains more of saturated fats.This fat increases the cholesterol level in humans and so it is harmful in nature.</span>
Answer:
reintroducing
Explanation:
mainly because animals arnt for captivity
