Which activity released the most carbon between 1750 and 2012

Making cement
Burning fossil fuel
Mining coal
Cutting down trees

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Mitosis creates two identical daughter cells from one parent cell creates four nonidentical daughter cells from one parent cell is the most common type of reproduction for bacteria is the process by which male and female reproductive cells are created

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis