The answer fam is......... B. pioneer species-primary succession-secondary succession-climax community
"Primary succession begins in barren areas, such as on bare rock exposed by a retreating glacier. The first inhabitants are lichens or plants—those that can survive in such an environment. Over hundreds of years these “pioneer species” convert the rock into soil that can support simple plants such as grasses. These grasses further modify the soil, which is then colonized by other types of plants. Each successive stage modifies the habitat by altering the amount of shade and the composition of the soil. The final stage of succession is a climax community"
Complete the following statement
When the forearm is extended at the elbow joint, the ____________muscle acts as the agonist.
Answer:
triceps brachii
Explanation:
The triceps brachii is a muscle located at the arm. It is a posterior muscle consisting of a long, medial and lateral head which originates from the humerus. It also covers almost the entire length of the humerus.
The functions of triceps brachii are:
Extension of the forearm at the elbow joint. The extension and adduction of the arm at the shoulder joint as a result of its long head.Controls the movement of the elbow