Plants and photosynthesis. Animals eat food to get their energy. But green plants don't. Instead they make their own food, glucose, in a process called photosynthesis. We say that plants can photosynthesise. These are the things that plants need for photosynthesis: carbon dioxide.water. light.lants and photosynthesis. Animals eat food to get their energy. But green plants don't. Instead they make their own food, glucose, in a process called photosynthesis. We say that plants can photosynthesise. These are the things that plants need for photosynthesis: carbon dioxide.
Crop Rotation. Definition - What does Crop Rotation mean? Crop rotation is the systematic planting of different crops in a particular order over several years in the same growing space. This process helps maintain nutrients in the soil, reduce soil erosion, and prevents plant diseases and pests.
You deplete the nutrients in the soil and have to add fertilizer to make up for the loss. With crop rotation you can plant something like corn, that needs nitrogen in the soilâ¦, one year and then plant something like soybeans the next year that absorbs (fixes) nitrogen from the air and leaves it in the soil. Further, without crop rotation the crops have a much greater chance of developing insect or disease problems.