Flowers of orchid species ophrys bombyliflora look and smell like female bumblebees. this attracts the male bumblebees flying nearby to the flowers. thus, pollen sticks to the head and abdomen of the bumblebee, which causes pollination. this orchid species is only pollinated by these bees, which is why the species is known as bumblebee orchids.

what mode of evolution is represented by this example?

coevolution
punctuated equilibrium
adaptive radiation

This form of evolution is known as adaptive radiation. Adaptive radiation is the process by which one species evolves to be able to adapt to competitive surroundings and results in the species' survival. In this example, the flower evolved in an adaptive way to ensure that only bumble bees would want to pollinate their flowers as they would be attracted to the scent of the females.

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.