Which of the following are limiting nutrients?Fossil fuels are normally stored in a reservoir deep in the Earth. The carbon in fossil fuels, including coal and oil, are essentially locked out of the natural carbon cycle due to their location deep in the Earth. Humans have found a way to access and utilize this carbon. Identify a risk for accessing this carbon. Scientists conclude that excess carbon will reduce the need for other nutrient cycles.

Scientists feel that the extra carbon will assist in plant growth.

Scientists are not sure if the atmosphere can handle all of the excess carbon.

it would lead to upper respiratory infections and pneumonia.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

c. establishing proper sleep hygiene