Answer:
it's D; answer is literally on the little speech bubble in the picture
Explanation:
You can draw a free body diagram with two 250N forces acting on the human, one from each side. The net force is 0 because the two applied forces cancel each other out since they are in opposite directions.
The correct answer is: D) C3H8 + 5O2 -> 3CO2 + 4H2O
The law of conservation of mass (matter) states that the mass of the system must remain constant over time. So, the mass of the chemical components before the reaction must be equal to the mass of the components after the reaction, according to this law.
3 C,8 H, 10 O
Artificial selection is a process during which humans intentionally breed organisms with desirable traits. The answer is B.