They are all living, they grow, reproduce, excrete, respire and require nutrition. They all differ, the human, oak tree, sea weed and mushroom are multicellular( prokaryotes), and the rest are Unicellular( Eukaryotes). The sea weed& most bacterium produce their own food while the rest need to feed.
I don't know if you already got a response but I would be more than happy to help you out
If im not mistaking it will be A is the only other one that really makes any sense
Answer:
Four major components
Explanation:
A- There are 4 major components of the blood.
1- Red Blood cells 45% of blood portion
2- White blood cells make up to 1% of blood proportion
3- Platelets less than 1% of the blood portion
4- Plasma 55% of the blood components
B- platelets are responsible for initiating the clotting process.
C- pathogens can enter into the body through airborne particles, skin contact, through food and body fluids.