Animals can not make their own food, so they are _______.
consumers
100
What is the name for the substances that help living things grow and stay alive?
nutrients
100
What is an animal structure that takes in oxygen from the air?
lungs
100
Living things compete for food, water, shelter, and _________.
space
100
The arrows in a food chain diagram show the flow of ________.
energy
200
A diagram that shows how energy passes from one organism to another in an environment is a ___________.
food chain
200
what do leaf veins carry from stems to leaves?
water
200
How do worms take in oxygen?
through their skin
200
A struggle among living things for resources is called is __________.
Competition
200
Which of the following is a producer?
tulip poplar
turtle
tiger
the Sun
tulip poplar
300
Sunlight and air are _____________ that help many plants survive.
resources
300
What do trees use to make food?
water, sunlight, and carbon dioxide
300
What helps living things grow and stay healthy?
nutrients
300
What is a word that means "changing with age"?
growing
300
A ____________ eats other organisms.
consumer
400
Two animals fighting for the same food source is an example of _____________.
competition
400
Needles on an evergreen tree are examples of which plant structure?
Leaf
400
Tiny holes that allow sweat to exit are called______.
pores
400
What happens when a plant resonds to sunlight?
it bends towards the light
400
Plants and animals need _________ to grow and repair damaged parts.
energy
500
Animals and plants get what they need using different ____________.
structures
500
Why is it important for pepole to preserve the world's rain forests?
The rain forests are filled with trees and plants. Trees and plants give off oxygen people need. By cutting down rain forests, people are decreasing the world's oxygen supply.
500
Which of the following is an example of a structure that keeps an animal safe?
Quill
Lung
Water
Leaf
Quill
500
Does a deer compete for resources? Explain.
Yes, a deer competes for resources. It might compete with other deer for food, space, or water. It may compete with other animals for resources, too.
500
Do plants depend on animals for food? Do animals depend on plants for food?
Plants do not directly depend on animals for food. All animals depend on plants to get food and energy.