Answer:
By contracting, muscles pull on bones and allow the body to move. ... For example, the biceps and triceps muscles work together to allow you to bend and straighten your elbow. When you want to bend your elbow, your biceps muscle contracts (Figure below), and, at the same time, the triceps muscle relaxes.
Explanation:
<span>B. chemical control by use of chemicals
</span><span>D.physical control by physically removing the species
</span><span>
A. biological control by using other living organisms to rid of invasive species
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