Are sand dunes constructive and destructive

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

In a cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait. mating two of the f1 fish fails to produce females with the trait. explain the inheritance pattern of the trait.