Explain photosynthesis and how plant foods are produced. Discuss the effects of weeds on plants.
Plants grow almost everywhere on earth.
They grow from the northern- most tundras to the driest deserts. Because plants are the beginning of our food chain, all life depends on them. We eat chickens which eat grain, or fish which eat seaweed. List and describe three major elements found in a fertilizer. Explain the difference between organic and inorganic fertilizers.