What process lead to biological nitrogen fixation?

What type of genetic drift would be simulated if all the beans that were not selected died out?

Explain why ecosystem diversity results in species diversity in a healthy biosphere

True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.