Which of the three challenges of life is important for organisms to continue existing?
a. getting and using energy
b. reproduction
c. maintaining structure
d. maintaining water

Astudent drew the following flowchart to show the movement of nutrients. soil → roots → plants →? where does nitrogen go next? a. directly into nearby animals as nutrition b. directly into aquifers through condensation c. directly into the air through evaporation d. directly into nearby plants during fixation

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Plsss > .< compare and contrast the characteristics of flatworms rounds worms and earthworms