Show:
Micro-organisms
Micro-organism Safety
Artificial/Natural Selection
Fossils/Biodiversity
Microscope
100
What is another word for "micro-organism"?
Tiny/small living thing.
100
True or false: Keeping food on the counter in a warm environment will keep micro-organisms from spoiling our food.
False
100
What do you call when humans choose which variety of a species gets to reproduce?
Artificial selection
100
What are fossils?
Remains or traces of organisms from the past.
100
Extinction
What do you call the dying off of all the members of a species, which lasts forever?
200
True or false: There are bad micro-organisms, but we also need micro-organisms to survive.
True
200
What is the easiest way to protect us from bad micro-organisms?
Washing our hands.
200
The black moth and white pepper moth story is an example of what type of selection?
Natural selection
200
What do you call an individual that studies fossils and other evidence of ancient organisms?
A paleontologists.
200
What is an endangered species?
An organism that are in danger of becoming extinct.
300
Why are some micro-organisms bad?
Because they release poisonous materials into the food that make us sick.
300
True or false: Salmonella can spread from uncooked to cooked food making you very ill?
True. That's why we should always keep uncooked and cooked meat separately and properly covered.
300
Which members of a species are most likely to survive, reproduce, and pass on their traits?
Over time, individuals best suited to the environment will be most likely to survive, reproduce, and pass on their traits.
300
Where can you find fossils? Name three places.
In ice, rock, and tree sap.
300
True or false: As we build homes for people and damns for power, we destroy the habitat (environment) of many wild plants and animal species.
True.
400
What is an example of a good micro-organism?
Yeast helps us make bread. Some bacteria helps us make yogurt and cheese.
400
What are three (3) ways to keep micro-organisms from spoiling our food?
1. Wrap/cover food properly 2. Keep food in the refrigerator 3. Pay attention to expiry dates
400
Provide three examples of a "trait"?
Height, eye colour, hair colour, hair curliness, skin colour, etc.
400
What do you call the measurement of age by the amount of a radioactive substance (carbon-14).
Radioactive dating.
400
Provide three (3) examples of how humans contribute to the extinction of animals and plants.
-Destroying habitats to build homes for people. -Damming rivers to produce hydro electric power. -Over-fishing and over-hunting. -Climate Change -Use of pesticides. -Introducing foreign species (ex. Moose) -Deforestation -Water contamination
500
Provide an example of a bad micro-organism.
Bacteria: Tonsillitis, Pneumonia Fungi: Athlete's foot, Ringworm Protists: Maleria, Sleep Walking
500
Other than washing our hands, what are two other ways to protect ourselves and others from bad micro-organisms?
Stay at home if you are sick, and going to the doctor if you have a bacterial infection.
500
What would happen if there was no variation within a species?
They will all die because they wouldn't be able to survive. Example: If every giraffe is the same, and all had short necks, they will all die. Or, if there were only white pepper moths, they would have all been eaten, thus becoming extinct.
500
Scientists drill hot, hollow pipes into the deep layers of ice. They count the layers to see how many years the ice has been piling up. In which layer of the ice would you find the oldest fossils?
The ice that is furthest away from the surface (in the deepest part of the ice sample).
500
Why is it important to respect and preserve the Earth’s variety of life?
If we disrupt the "pyramid of dependence", or throw it off balance, we could destroy all living things, including humans. For example, if bees became extinct, there would be nobody to pollinate all the flowers, which means the flowers would die, which means that herbivores would as well, and then carnivores, etc. Even a small change in our nature's balance can be devastating.