Mice can produce a litter of offspring as often as every 20 days, An elephant can produce one offspring every two
years
Which of the following BEST describes the advantage of
having fewer offspring?
There are fewer offspring for hungry
predators to eat.
Parents can pay more attention to each
offspring
O
Offspring receive only the best traits an
adaptations,
Only one offspring will increase its
survival rate.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

p

explanation: