Thinks mrs. Clack that finned tetrapods developed "hands" before or after migrating to land​

Environmental differences within ecosystems are generally caused by

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above