One would be because scientists find fossils i guess the next would be because of adaption
Answer:
"The immune system is made up of special organs, cells and chemicals that fight infection (microbes). The main parts of the immune system are: white blood cells, antibodies, the complement system, the lymphatic system, the spleen, the thymus, and the bone marrow."
Explanation:
(16.5 m/s + 5 m/s) ÷ (40 m) = 0.5375 Hz
1 ÷ 0.5375 Hz = 1.86 s
round up and you get 1.9 s, so the answer would be A.
Answer:
Because a force is a vector that has a direction, it is common to represent forces using diagrams in which a force is represented by an arrow. In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. ... A force has both magnitude and direction, making it a vector quantity.
Therefore, yes
