How does the length of string affect the number of times a pendulum will swing back and forth in 10 seconds

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

Which beat describes the brain stem

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the