WorksheetsUnit 3 Review (continued)
Total questions: 10
Worksheet time: 5mins
How can humans reduce our negative effect on ecosystems?
deforestation
introducing invasive species
logging
recycling
This kind of fossil leaves behind evidence of an animal's behavior or activity.
Mold fossil
Cast fossil
Trace fossil
True Form fossil
Footprints, nests, and eggs are all examples of what kind of fossils?
Mold fossil
Cast fossil
Trace fossil
True Form fossil
What might a paleontologist conclude about an animal who's fossil footprints were far apart?
It could swim.
It was walking.
It was able to fly.
It ran fast.
A mold fossil is
evidence of animal's behavior such a footprints or nests
the positive image of a fossil that was formed by sediments and minerals
the entire preserved organism
the impression of the animal or plant left after it decomposed
Which of these affect an ecosystem and cannot be stopped?
plants
natural disasters
animals
people
The relationships a population has with others in its community are:
always harmful
never harmful
sometimes harmful and sometimes beneficial
always beneficial
People put harmful things in the air, water, or soil, which can cause plants to die and animals to get sick.
fire
drought
pollution
using natural resources
Which is a way humans can positively influence a saltwater ecosystem?
Fishing Everyday
Over fishing
polluting the water where fish swim
being careful not to over fish.
What might an organism do if there is a change to its ecosystem?
Move
Die
Survive
All of the Above
