A boy of mass 10kg climbs a mango tree of 5m to pick some mangoes. If he climbs the tree with a velocity of 2ms calculate his :kinectic energy, potential energy, take g=10​

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above