Smoking may lead to weight gain because it increases the body's capacity for physical activity true or false

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.

How many major plates cover the earth

This part insulates the reaction chamber from the transfer of heat to or from the surrounding environment