AP BIOLOGY

Detailed explanation-1: -Nitrogen is essential for plants to grow and survive. Without proteins – some as structural units, others as enzymes – plants die. Nitrogen makes up a large part of chlorophyll, which plants need for photosynthesis, the process of using the sun’s energy to make sugars from water and carbon dioxide.

Detailed explanation-2: -All living things need nitrogen to build proteins and other important body chemicals. However, most organisms, including plants, animals and fungi, cannot get the nitrogen they need from the atmospheric supply. They can use only the nitrogen that is already in compound form.

Detailed explanation-3: -All plants and animals need nitrogen to make amino acids, proteins and DNA, but the nitrogen in the atmosphere is not in a form that they can use.

Detailed explanation-4: -Nitrogen is important to all living things, including us. It plays a key role in plant growth: too little nitrogen and plants cannot thrive, leading to low crop yields; but too much nitrogen can be toxic to plants [1]. Nitrogen is necessary for our food supply, but excess nitrogen can harm the environment.