The produces light and heat energy, and it helps to keep the Earth warm. A.
planet Jupiter
B.
galaxy
C.
Moon
D.
Sun

Which statement best describes the role of the artificial heart? the artificial heart is a good replacement option for individuals who do not want a human heart. the artificial heart has been a great option because it can keep patients alive for a very long time. the artificial heart is not a good option because of the high possibility for rejection. the artificial heart has limited usefulness but can prolong life or be a tool to use while waiting for a transplant.

Ore is feeling cold, and he is clenching his fists together to stay warmer. he then releases his grip a little bit because he feels that it is too tight. which two particular sensory receptors are activated through this experience? a. proprioceptors and mechanoreceptors b. thermoreceptors and mechanoreceptors c. mechanoreceptors and nociceptors d. nociceptors and proprioceptors

Identity one muscle structure and describe the role the structure plays in muscle contraction.