In the 1800s and early 1900s, farmers and scientists were just learning that cross-breeding corn caused heterosis, allowing farmers to grow more corn per acre of land farmed. Two different varieties of corn were crossed reciprocally: Variety A yielded 20 bushels per acre and Variety B yielded 25 bushels per acre, and the resulting hybrid progeny corn produced 27 bushels per acre. What is the percent heterosis?

its like this, "if i give a plant an unlimited amount of sunlight,then the plant will grow to its largest possible size."

hope it let me know if it does or doesn't =^-^=

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.