When cells reproduce DNA splits lengthwise and the bases sticking out as broken rings on each half ladder attract their complementary bases floating loosely in the cellular soul #BCSci19#chapter7
Life is a chemical reaction that directly or indirectly takes matter and energy from its surroundings to expand, propagate, and reproduce itself... who decided on this definition? #BCSci19#chapter7
There was at one time a massive amount of carbon dioxide in the atmosphere, but it is now mostly stored away in the crust, and to a lesser extent in the oceans and biosphere... #BCSci19#chapter 6
Chapter 5 talks about what it means to have oceans and our atmosphere and how these were formed. This chapter also discusses where terrestrial atmospheres came from. #BCsci19