Radius of circle = 3cm , what is it's diameter, circumference and area? How do I look rat-e me from a 1 to 10!​

What did hunter gathers do to alter the environment?

How does an angiosperm prevent self pollination

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants.d- food molecules are broken down in the cells if living things.