They are helpful, because they can feed bugs on common household pests
monerans are helpful to humans because it is bacteria and bacteria helps humans by making milk yogurt
An aolovera plant is helpful
no
Ladybugs are indeed helpful to humans, because they eat aphids, and aphids are damaging to many plants that we humans like to grow.
Some people are... *_*
you can eat them
cause
no
Helpful in the stratosphere, harmful in the troposphere.
computer.. both helpful and not..
all that i can think of is gives humans meat to eat
yes