Answer:
The sea star could be called a(n) keystone species.
Explanation:
The concept of keystone species was introduced by zoologist Robert T. Paine, in 1969. <u>A keystone species has a fundamental role in influencing an ecosystem, helping maintain the structure within an ecological community. The abundance or lack of the keystone species will determine the abundance or lack of other species as well.</u> It is common to use lions or wolves as examples of keystone species. If they disappear, certain animal populations that are usually hunted by them will prosper indiscriminately. That will drastically change the ecosystem, perhaps even leading it to its collapse. As we can see, the sea star describe in the passage is responsible for controlling the mussel population. The sea star is, therefore, a keystone species, preventing the overcrowding of mussels.
The Human Resource manager sticks to <u>C) A structured interview</u> method of selection.
<u>Explanation</u>:
A structured interview means conducting the interview for the candidates in a standardized way. This kind of interview is conducted based on the specific needs of the job. The candidates are reviewed with the same set of questions and compared on the same scale.
The structured interviews are better to conduct as it focuses on talents. It helps in effective selection of talented candidates.
The major disadvantage of structured interview is it is not flexible, as the interview was conducted with the pre-decided questions.
Answer: first continuous, then partial
Explanation: Continous reinforcement refers to a reinforcement schedule whereby every correct response performed is praised or reinforced, here, every time John's pet correctly performs that trick, the active or response of the pet is rewarded, thus will help carry out the correct response due to the reinforcement it receives. However, after sometime the reinforcement should be partial such that the action isn't reinforced every time the trick is performed. This according to the partial reinforcement extinction effect is more erobust than continuous reimbursement.
Another he could.have used was
From elem....XD
"My Very Eager Mother Just Served Us Nachos!"~~~~
hope this helps
@SamSamySamamtha♡♡♡♡☆¤
