D :D hope it was right I'm not sure but I'm trying so if it is ur welcome
Answer:
i) Population
ii) Reproduction
iii) Reproductive isolated mechanism
iv) Species
Answer:
except natural killer cells.
Explanation:
The Helper T cells produce cytotoxic T cells and help B cells, but not natural killer cells
Answer:
put down your dog then spin in a gucci gang like fashion
Explanation:
my iq is 2
Answer:
Taking shorter showers
Don't leave appliances running if you're not using them
Turn off lights after leaving a room
Eating less meat
Using renewable energy/ resources
Driving less
