Which of the following best demonstrates a community? a desert with high heat and low rainfall
a pond filled with fish, turtles, algae and weeds
all of the abitoic and biotic factors found in a tropical rain forest
All of the penguins living in an area

'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.

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi