Which of the following summarizes the main idea in paragraph 5? PLEASE HELP WITH THIS QUESTION

Paragraph 5 Says: Traits that are helpful in warm water may not be needed in the Arctic Ocean. Populations of a species living in different environments will develop different adaptations. For example, the ability to easily lose extra body heat would be helpful in a desert. This trait would be harmful in the Arctic. The camel's hump stores extra water for life in the desert. The hump would not be helpful to a rainforest monkey. Our environment will always change. Most of these changes take hundreds of years to occur. Scientists study the traits that have survived for hundreds of years. These adaptations show the power of short- and long-term environmental changes. They have shaped the world we live in today.

On a distance vs time graph the line of an object at rest is a

What is the relation between concentration of reactants and the rate of chemical reaction?

Nanotechnology, the field of trying to build ultrasmall structures one atom at a time, has progressed in recent years. one potential application of nanotechnology is the construction of artificial cells. the simplest cells would probably mimic red blood cells, the body's oxygen transporters. for example, nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person's bloodstream. if the person needed additional oxygen-due to a heart attack perhaps, or for the purpose of space travel-these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. suppose that the nanocontainers were cubic and had an edge length of 24 nanometers. part a part complete what is the volume of one nanocontainer? (ignore the thickness of the nanocontainer's wall.) express your answer using two significant figures. v v = 1.4ă—10â’20 l previous answers correct significant figures feedback: your answer 1.3824â‹…10â’20 = 1.382ă—10â’20 l was either rounded differently or used a different number of significant figures than required for this part. if you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer. part b suppose that each nanocontainer could contain pure oxygen pressurized to a density of 81 g/l . how many grams of oxygen could be contained by each nanocontainer?