Answer:
The correct option is B.
Explanation:
Muscle tissues of the heart refers to a group of cells that are carrying out similar functions in the heart. There are three different types of muscles, these are skeletal, cardiac and smooth muscles. The cardiac muscles are found in the heart, they form the contractile wall of the heart. These muscle contract involuntarily ( that is, without any external stimulation) and they are single nucleus, striated and short.
<span>"Hypothesis, because tentative means unsure."
</span>
<span>Species is a group of reproducing populations that are isolated from other groups. </span>
The correct answer is:
A. Photosynthetic pigments absorb energy from light.

Answer:
the fine transparent tubular sheath which envelops the fibres of skeletal muscles.