What do you call a chemical used to kill harmful insects?
Pesticide
100
What is the name for the type of precipitation that can change ecosystems because it pollutes soils and lakes?
acid rain
100
A group of bees working together is what type of adaptation?
behavioral
100
How would spraying pesticide on crops affect the insect population?
The population would decrease.
100
Which biome has more species than any other biome?
tropical rainforest
200
When the last animal of a species dies, the species becomes ____________.
extinct
200
An aquatic plant introduced to North America 100 years ago reproduced rapidly and forms a thick mat on top of the water. How will this affect its lake environment?
It would decrease the amount of sunlight reaching other aquatic plants.
200
The finches on the Galopagos Islands all have different beak shapes adapted to their environment and the type of food there. What type of adaptation is this?
structural
200
How did the bald eagle become endangered?
The overuse of pesticide DDT.
200
What are the organs in a plant called that are responsible for transporting water and other materials in the plant?
xylem and phloem
300
This is an inherited behavior that helps an organism survive.
adaptation
300
Why does introducing zebra mussels harm an environment?
They have no natural predators in their new environment.
300
What do you call a change in an organism's genes that can be passed from parent to offspring.
Mutation
300
A growing number of disease-causing bacteria are resistant to current antibiotics. How did some bacteria become resistant to antibiotics?
Some bacteria adapted to living with antibiotics and passed their genes to offspring.
300
Which body system is called the transportation system of the body?
Circulatory system
400
_______________ is a changed part of the body that helps an organism survive.
structural adaptation
400
Describe how a beaver dam can benefit a population of beavers, and also how it affects other organisms in the ecosystem.
Ponds protect beavers from predators. Ponds can hurt some organisms by flooding an old habitat but help other organisms by creating a new habitat.
400
A snowshoe hare turns white in winter in order to blend in to its surroundings. In this situation what is affecting the appearance of the snowshoe hare?
the environment
400
Explain how a species of mosquitoes can become adapted to having pesticides in their ecosystems.
A few mosquitoes have genes that allow them to survive the pesticide. These mosquitoes grow and reproduce while others die. The offspring may have the same genes that will allow them to live and reproduce.
400
Red blood cells look like small, smooth, flexible saucers. How does this shape help them perform their function?
The shape helps them move through blood vessels and trap oxygen.
500
What is the term for offspring getting genes from their parents.
inherit
500
What are the two ways that people can change ecosystems and give an example for each.
Accidently - bringing in new species, On purpose - pollution and garbage
500
Describe how a frog's structural adaptations help it avoid predators?
strong legs help it move quickly, suction cups help it climb to escape predators, its color helps it blend in to its surroundings
500
Explain how a species might become extinct.
An ecosystem changes, and if the species cannot move or adapt to the changes their numbers will decrease and they might die.
500
The most similar members of a genus belong to which level of classification?