Answer:
The correct answer is D. 1/8
1 out of 8 is the probability of having three girls in a row.
Bird vocalization is often a mating behavior; however, bird vocalization can be used to warn other birds if danger is nearby, or for other means of communication.
When an enzyme binds its substrate, it forms an enzyme-substrate complex. This complex lowers the activation energy of the reaction and promotes its rapid progression by providing certain ions or chemical groups that actually form covalent bonds with molecules as a necessary step of the reaction process.