If farmers grow the same crop on their soil every year they have to use fertilizer to replace essential nutrients in the soil. in order to use less fertilizer some farmers choose to rotate their crops by alternating with legumes such as beans. rotating crops and using fertilizer replenish the soil with which essential element required for all living things?

Zoe decided to measure the hand length of each of her classmates. first she marked a line across each student's wrist and lined up a ruler from this mark to the top of the middle finger to measure the length. then she recorded the measurements in the table below. marla did this the same way for each classmate, and then zoe used this ruler to measure each straight line and record the data below. this data is invalid. what is the most likely reason why it is invalid? the ruler is marked in centimeters, but zoe recorded data in inches. the range of lengths is too wide, so zoe must have misread the ruler. marla’s complicated measuring procedure was overly confusing. marla could have been inconsistent while drawing outlines of fingers.

Apart of an ecosystem that can restrict the growth of a population is referred to as

Modern whales developed their traits through natural selection what occurs during the process of natural selection