The male develops inside the pollen grain.

How does a gymnosperm prevent itself from pollinating the same tree

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above