Answer:
A
Explanation:
If you do B, the wagon slows down due to friction
If you do C, it would slow down the wagon by half
If you do D, it would slow it down, due to there being more weight but same force.
To increase the number of snowmen destroyed, you would want more energy and all of the above would increase the energy of the system so D.
The weight of the car in the picture of the computer screen is 9,800 Newton's.
Answer: Increase in competition for abiotic factors.
Explanation: Resource availability is one of the main factors determining the ecological dynamics of populations or species. Fluctuations in resource availability can increase or decrease the intensity of resource competition. Resource availability and competition can also cause evolutionary changes in life-history traits
Answer:
V = wavelength * frequency = 1.5 * 5.5 = 8.25 m/s