Answer:
True
Explanation:
On the Mohs hardness scale, Quartz is a 7, therefore it should be able to scratch through any minerals numbered 1 through 6
Which 2 species? like I need to know in order to tell you
Answer:
True; all cells in a mature embryo can develop into muscle.
Explanation:
The right answer is D (less responsive to antigens)
It is proven that, after puberty, thymus activity (an organ that is included in the lymphatic system, producing T cells that pick up antigens) decreases and that in adult and aged people the thymus has no role. Work done in humans indicate that in fact the cellularity begins to decline from birth in favor of lymphocyte perivascular spaces and connective and adipose tissue, which leads to a decrease in the capture of antigens.
Answer:
20 newtons
Explanation:
You have to subtract the smaller force from the larger since the forces are being pushed in opposite directions.
