Ecosystem
A group of living and nonliving things interacting in one place
Ecosystem
The process where water vapor cools and forms clouds.
condensation
Anything that has mass and takes up space.
Matter
The frog population decreased because there are fewer insects in the pond.
CLAIM
When harmful substances enter rivers, lakes, or oceans.
water pollution
An organism that makes its own food using sunlight
producer
Water falling from clouds as rain, snow, sleet, or hail.
precipitation
Matter that keeps the same substance but changes shape or size.
physical change
According to the text
Scientists observed that the number of insects in the pond dropped from 200 to 20 after pollution entered the water.
Evidence
Ocean waves with short wavelengths usually carry this type of energy compared to longer wavelengths.
more energy
Animals that eat plants and other animals.
omnivores
The process when liquid water turns into water vapor.
evaporation
A change where a new substance forms.
chemical change
Frogs eat insects for food, so when the insect population decreases, the frog population will also decrease.
Reasoning
physical properties have ______ and _________
color and texture
A model that shows how energy moves through an ecosystem.
food web
The largest source of water on Earth
The Ocean
The smallest unit of matter.
Atom
Heat from the sun causes liquid water to change into water vapor, which rises into the air.
Reasoning
When the wavelength of a wave becomes shorter, this property of the wave increases.
frequency
When one species disappears and other populations change because of it.
disruption in the ecosystem
Only about 3% of Earth’s water that humans can use.
freshwater
A measure of how much matter something contains.
mass
These organisms break down dead plants and animals and return nutrients to the soil.
Decomposers
What is two or more substances that can be separated?
A mixture