Answer:Muscles relax and contract when one muscle pulls and moves your body part and if you want to do the opposite movement the opposite muscle contracts, allowing the first muscle to relax.
Explanation:
1. heat
2. cooling
3.water use
The answer is: homologous; common; homoplastic.
<span>The bones in the wings of birds and bats are <u>homologous</u> because they derived from a <u>common</u> ancestor, while the wings are <u>homoplastic</u> traits. Homologous structures are similar structures shared by different groups and that are derived from a common ancestor. The similar anatomy of bones in the wings of birds and bats is inherited from a common ancestor of tetrapods (to which birds and bats belong). However, wings are not inherited from the common ancestor of birds and bats. Therefore, wins are homoplastic traits (analogous structures) because they have similar function but they are not inherited from the common ancentor.</span>
The answer to this question is that:
No Trans-fat is not considered safe because all the because its bad fot your body and your (LDL) and when you eat trans fat in increases the chances of you getting high blood pressure so make sure to avoid it and eat healthy
Hope this help, Hollieboobear
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