Prior to mendel: a. humans observed, manipulated, and understood heredity and how it worked. b. humans observed and manipulated heredity; however, they did not understand how it worked. c. humans knew that heredity was controlled by genes; however, they didn't know the dna structure. d. humans had no ideas about heredity. e. humans observed heredity; however, they could not understand or manipulate it.

What is the difference between self-pollination and cross-pollination? question 2 options: self-pollination leads to the creation of a fruit. cross-pollination does not. during cross-pollination, ovules are carried from one plant to another plant.. during self-pollination the ovules stay on the same plant. during cross-pollination, ovules are carried from one plant to another plant.. during self-pollination the ovules stay on the same plant. during cross-pollination the pollen grains are carried from one plant to another plant. during self-pollination the pollen and ovules are from the same plant. during cross-pollination, the pollen grains travel from the stigma to the anthers. during self-pollination, the pollen grains travel from the anthers to the stigma.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?