spheres
what are the 4 spheres?
geosphere, hydrosphere, atmosphere, and biosphere.
what are 2 types of pollution?
water pollution and air pollution
what is the first thing in the food web?
the Sun.
what type of water is least on earth?
fresh water
what do all the planets revolt around?
the Sun
what 2 spheres are interacting when humans drink water?
biosphere and hydrosphere.
when the water gets polluted, what gets affected by that?
the fish that live there, the fish's habitats, and the water itself would be dangerous to drink or live in.
what does it mean when an animal is a carnivore?
it eats other animals (or it eats flesh/meat)
how much water covers the earth?
71% - 75% (I don't have an exact answer because different sites said different things)
what do all the planets and stars rotate around?
their axis.
what spheres does the biosphere need to survive?
hydrosphere and atmosphere
in air pollution, what is it called when fog and smoke mix together?
smog
what does it mean when an animal is an omnivore?
an animal that eats meat and vegetables.
what is it called when fresh water and salt water is mixed? (this can cause severe diseases or death if drunk)
brackish water
how many planets are there in the solar system?
8
what 3 spheres are interacting when fish hide under rocks inside the ocean?
biosphere, hydrosphere, and geosphere.
in air pollution, what layer of the atmosphere that can help when it is high, comes down and starts to harm people? (it can also make people have cancer.)
the ozone layer
when everything dies, what grows on top of it and feeds on it?
decomposers.
out of all the water on earth, (71%-73%), how much of that water is fresh water? (answer is an exact number)
3%
how long does it take the earth to revolt around the Sun?
365 days or one year
can any of the spheres turn into a different sphere?
yes, water from the hydrosphere can turn into gas that belongs in the atmosphere.
in water pollution, what is a bacteria that is made when oxygen is low in the water? (we learned this in a brain pop video)
anaerobic bacteria
owls, bears, lions, wolves, foxes, and whales are known as what type of predators?
apex predators.
how much water on earth is known to be groundwater?
1.69% - 2%
why do some stars seem bigger than others even though they're the same size?
the 2 stars are from a different distance from earth which makes it look like one star is bigger than the other.