Answer: polyunsaturated fatty acid residues
Explanation: Unsaturated fatty acids have a lower melting point so arctic animals have these fatty acids in their membranes.
Answer:
The correct answer is "Runaway sexual selection".
Explanation:
Runaway sexual selection, also known as Fisherian runaway in honor to Ronald Fisher the scientist that proposed it, is a type of sexual selection on birds, at which exaggerated male ornamentation are developed since females prefer males with these characteristics. Runaway sexual selection is a biological paradox, since male with exaggerated ornamentation are selected by the females but also are more easily caught by predators. Runaway sexual selection fits the description of the species of bird herein described.
The answer is Convergence of images behind the Retina
Convex lens converges light to a principal focus. The thickness of the lens determines the focal length (distance between the center of the lens and the principal focal point). Therefore, by evaluating the thickness of the convex lens, farsightedness, (an eye defect of convergence of images behind the retina) can be corrected by enabling images in the eye to form behind the retina.
Answer:
D. Both a and c are correct.
Explanation:
The tragedy of the commons is a situation in a shared-resource system where individual users, acting independently according to their own self-interest, behave contrary to the common good of all users by depleting or spoiling the shared resource through their collective action.
It damages our environment (plants, animals) and impacts local tourism. It is smelly and dirty, and carries germs, bacteria and viruses. Places with a high degree of littering see a decreases in property values, and are more likely to be the site of fires.
Pollution is a negative externality. Economists illustrate the social costs of production with a demand and supply diagram. The social costs include the private costs of production incurred by the company and the external costs of pollution that are passed on to society.
Blowing litter can cause automobile accidents as well as land and air pollutions
So carbon dioxide can diffuse from the leaf
