Trees and other plants, which are important natural resources, provide us with a. argon b. oxygen c. nitrogen d. carbon dioxide

Oxygen

Explanation:

Trees and plants that have chlorophyll take in carbon dioxide from the air and combine it with water in a series of photosynthetic processes to make food for the plants. This is important in not only removing the excess carbon dioxide that is in the air but in also providing oxygen to animals.

individual oxygen atoms are formed during photosynthesis.-c.

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15