The ______________ is the top layer of soil. It is usually dark and rich in minerals.
Topsoil
100
A forest community is centered around ___________.
trees
100
What do the tiniest plants of the forest grow from?
spores
200
________________ is dissolved in water for fish to breathe.
oxygen
200
A bittern is a _________________. (MRFAB)
Bird
200
This type of soil helps the plants to grow well.
fertile
200
The ____________ ____________ of the tree tell its age.
annual rings
200
As water evaporates from the ocean, what is left behind?
salt
300
Fish give off _________________ as they breathe, which helps the plants.
carbon dioxide
300
A muskrat is a _______________. (MRFAB)
mammal
300
_________________ is loss of soil by wind or water.
erosion
300
How do roots help the tree? (2 ways)
They hold the tree in the ground .
They absorb water and nutrients.
300
What happens to the cactus plant when it rains?
It quickly absorbs the water causing the plant to swell (get big and round)
400
Plants give off ___________, which the fish need.
oxygen
400
A water moccasin is a ________________. (MRFAB)
snake
400
Why did God give the field mouse so many enemies?
To keep the numbers of mice from getting so large that they eat too much of the farmer's crops, resulting in man and other animals not having enough to eat.
400
What causes leaves to change color?
As the amount of sunlight decreases, the chlorophyll in the leaves breaks down.
400
Why do plants grow easily around the pond?
The soil/mud is rich in minerals.
500
State two of the three ways that ponds and oceans are different from each other.
1. Ponds can be made by man; oceans cannot be made by man.
2. Ponds are freshwater; oceans are saltwater.
3. Water in ponds is usually still; water in oceans is not still.
500
A minnow is a _______________. (MRFAB)
fish
500
How does the earthworm help the farmer?
The holes allow air into the soil,
the holes allow water into the soil,
and they eat the soil and their waste fertilizes the earth
500
The ______________ of the tree make food for the rest of the tree.
leaves
500
What is the most interesting thing that you learned during the unit on biomes?