The correct answers are:
• that dark matter exists
The existence of dark matter (invisible matter) is generally accepted and it is believed that this matter is about 85% of the total matter in the universe and it is composed of undiscovered subatomic particles.
• that invisible matter must be influencing the rotation of galaxies
Dark matter is crucial for explaining why galaxies can spin without tearing themselves apart.
Answer:
Sorry but can you add the choices?
Answer:
It is B: provides for the tight regulation of all physiological variables
Explanation:
Trust me on that one.
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Homeostasis:
In biology, homeostasis is the state of steady internal, physical, and chemical conditions maintained by living systems. This is the condition of optimal functioning for the organism and includes many variables, such as body temperature and fluid balance, being kept within certain pre-set limits.
Answer - Internal Maintainence
Reasoning - For Example Humans going outside into the heat will start to first experience the heat (Obviously) first thing your body will do is sweat in order to regulate the body temperature and (Maintain) without you dying. Internally your body will go and do faster breathing because of the heat.
