Answer:
When you increase speed, you add energy and increase momentum as it would require more energy to change, stop or reverse the object's direction of travel than before the speed increase. Increasing the speed increases the momentum proportionally.
Explanation:
It's D. Gravity holds everything in place
Answer:
Explanation:
You could test effect of oxygen levels on growth of a regular houseplant. You could make the control to be plant grown under regular atmospheric Oxygen level. And for changing variables you could have one plant grow at low oxygen level compared to atmospheric oxygen and another plant to grow at higher levels of oxygen when compared to atmospheric oxygen.
Result of the other variable