Answer:
Symbiosis is a close relationship between two species in which at least one species benefits.
Explanation:
Answer:
Disease and Famine
Explanation:
If there is a disease that affects a type of plant, having other types of crops to rely on could save one from starvation. Also, only planting one crop in an area can change the pH and nitrogen levels in negative ways, so that eventually no plants can grow there. Not to mention the obvious balanced diet needed for a healthy body.
Answer:
An object in motion stays in motion unless an external force acts on it.
Explanation:
Newton's first law, the law of inertia, states that an object will remain at rest or in motion unless acted upon by another force.
A testable hypothesis must be just that--testable. You must be able to provide evidence that your hypothesis can be proven true in order for it to be considered accurate enough for future use among scientists. This can be done through repeated experimentation.
