Science facts
What is the main reason prairie dog's live together?
for protection
Which word best completes the sentence?
The population of lemmings changes when the amount of ____________in their environment changes.
resources
A _____is a living thing that breaks down waste and things that have died.
decomposer
Small trees trying to get the same resources as taller trees is an example of which of the following?
competition
sunlight> cattail> crayfish >raccoon
which term describes the food getting interactions among the living things in this chart?
food chain
In which part of the digestive system does most digestion happen?
Small intestine
When plants burn, they can turn to ash. How does the ash left by a fire affect other plants?
It helps plants grow.
How does a beaver's dam change the environment?
There are more fish
_keeps a person's heart, lungs, and muscles strong.
Exercise
What is one way to stop the spread of germs?
Wash hands often
People obtain the things they need to live from the environment.What do people need to survive?
food, water, shelter, air, and a clean environment
Explain how yucca mother and yucca plants help each other
The moth gives the yucca plant pollen from another yucca flower. The yucca plant gives the moth a habitat and food for its young.
In a food web, prairie dogs eat grass. Ferrets eat the prairie dogs. Golden eagles eat prairie dogs and mice. Badgers eat the ferrets. Ranchers brought cattle into the food web and removed many prairie dogs. How did the ranchers' actions affect the other animals?
Many ferrets died because they had no food to eat. The golden eagles had to eat more mice. There were fewer ferrets for the badgers to eat. They had to find other food.