Answer:
Gravity is the only force acting on a falling ball because of free fall. Since gravity is unbalanced it accelerates an object and the velocity increases as an object falls due to gravity pushing it. The acceleration due to gravity is 9.8 m/s^2.
Not true. For all diseases caused by pathogens (even viruses), there is a minimum infectious dose needed to cause disease.
It does vary between different pathogens & between the condition of the host (immunocompromised vs. healthy), but if the minimum infectious dose is not met- then the body is typically able to snuff out the intruders before they can do any real damage.
Hope that helps!
Answer:
C
Explanation: Water vapor can turn into liquid water when it cools and Liquid water turns into vapor when it heats