Ahealthy, balanced ecosystem has
a fewer producers than consumers
b. more quaternary consumers than primary consumers
c. more producers than consumers
d. fewer primary consumers than tertiary consumers
select the best answer from the choices provided

Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.