Correct answer choice is:
B) Carry out essential life functions.
Explanation:
They are essential to the lives of people, plants, animals, and all other organisms. Nutrients help cut down food to give organisms potential. The most essential nutrients they require are carbon, hydrogen, and oxygen. Other nutrients required by plants are nitrogen, phosphorous, potassium, calcium, magnesium, and sulfur.
B, the independent variable because this is the one that is purposefully changed in an experiment to test the hypothesis.
Answer:
A sexual reproduction is being shown