Both cells are formed in bone marrow.....but t cells matures into thymus....and b cells matures into bone marrow ! both helps in defense !
B cells can connect to antigens right on the surface of the invading virus or bacteria.
T- cells can only connect to virus antigens on the outside of infected cells.
for more info , comment !
This is easy
Number 2 is 20 N to the right
Number 3 is 30 N up
Both are unbalanced
Answer:
Explanation:
Density of an object is defined as the mass occupied per unit volume. “Density” is represented by “ρ”. Mathematically, 
where, “m" mass of an object and "v" is volume of an object.
Given that,
Dimensions of the block are 20 cm, 5 cm and 10 cm.
Mass of the block is 2700 g.
Substitute the given values in to find density of a block.
Answer:
It will take. the same distance up as before, but take a longer time
