Ecology B/C

Test your knowledge of various Science Olympiad events.
Fridaychimp
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Re: Ecology B/C

Postby Fridaychimp » March 22nd, 2018, 6:51 pm

Questions
1. What were Thomas Malthus's ideas on population growth? 2. Give two examples of animals using crypsis. 3. What factors prevent trees from growing in temperate grasslands? 4. Name a benefit and a harm of parthenogenesis.
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kate!
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Re: Ecology B/C

Postby kate! » March 27th, 2018, 2:50 pm

Questions
1. What were Thomas Malthus's ideas on population growth? 2. Give two examples of animals using crypsis. 3. What factors prevent trees from growing in temperate grasslands? 4. Name a benefit and a harm of parthenogenesis.
Answers
1. Thomas Malthus created the idea of Malthusian growth, in which population increases geometrically, but food increases arithmetically. 2. a) some frogs use aposematic coloration to warn others that they are poisonous. b) stick bugs camouflage within trees to avoid detection by predators. 3. Frequent fires prevent trees from growing in temperate grasslands. 4. If individuals become isolated, this is a method to reproduce without a second organism present. However, it limits genetic diversity.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

Fridaychimp
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Re: Ecology B/C

Postby Fridaychimp » March 27th, 2018, 2:53 pm

Questions
1. What were Thomas Malthus's ideas on population growth? 2. Give two examples of animals using crypsis. 3. What factors prevent trees from growing in temperate grasslands? 4. Name a benefit and a harm of parthenogenesis.
Answers
1. Thomas Malthus created the idea of Malthusian growth, in which population increases geometrically, but food increases arithmetically. 2. a) some frogs use aposematic coloration to warn others that they are poisonous. b) stick bugs camouflage within trees to avoid detection by predators. 3. Frequent fires prevent trees from growing in temperate grasslands. 4. If individuals become isolated, this is a method to reproduce without a second organism present. However, it limits genetic diversity.
Looks good, your turn.
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kate!
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Re: Ecology B/C

Postby kate! » March 29th, 2018, 1:02 pm

Questions-
1. What is the difference between Batesian and Mullerian mimicry? 2. Why do some deserts contain Entisols, rather than Aridisols? 3. How does eutrophication affect the properties of the water it occurs in?
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

MattChina
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Re: Ecology B/C

Postby MattChina » March 29th, 2018, 3:31 pm

Questions-
1. What is the difference between Batesian and Mullerian mimicry? 2. Why do some deserts contain Entisols, rather than Aridisols? 3. How does eutrophication affect the properties of the water it occurs in?
Answers
1. Müllerian mimicry is when multiple species share the same warning coloration, but all of them have defenses and Batesian is when harmless species mimics aposematic coloration of harmful one 2.They are very dry 3. Eutrophication increased dissolved oxygen in the water
2019 events: Water Quality, Battery Buggy, Elastic Launch Glider, Density Lab, Circuit Lab, Thermodynamics
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kate!
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Re: Ecology B/C

Postby kate! » March 29th, 2018, 5:41 pm

Questions-
1. What is the difference between Batesian and Mullerian mimicry? 2. Why do some deserts contain Entisols, rather than Aridisols? 3. How does eutrophication affect the properties of the water it occurs in?
Answers
1. Müllerian mimicry is when multiple species share the same warning coloration, but all of them have defenses and Batesian is when harmless species mimics aposematic coloration of harmful one 2.They are very dry 3. Eutrophication increased dissolved oxygen in the water
I mean, your second answer could be wayyyyyy more specific, but other than that, you're good.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

MattChina
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Re: Ecology B/C

Postby MattChina » March 29th, 2018, 7:12 pm

Questions
This sounds like a stupid question but its valid. Why are deserts so dry?
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kate!
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Re: Ecology B/C

Postby kate! » March 30th, 2018, 9:10 am

Answer
Deserts are so dry because there is very little precipitation/humidity.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

MattChina
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Re: Ecology B/C

Postby MattChina » March 30th, 2018, 10:44 am

Answer
Deserts are so dry because there is very little precipitation/humidity.
but why is there little precipitation and humidity
2019 events: Water Quality, Battery Buggy, Elastic Launch Glider, Density Lab, Circuit Lab, Thermodynamics
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kate!
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Re: Ecology B/C

Postby kate! » March 30th, 2018, 11:25 am

Answer
Deserts are so dry because there is very little precipitation/humidity.
but why is there little precipitation and humidity
Wind traveling there cannot pick up moisture.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

MattChina
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Joined: February 12th, 2017, 8:06 am
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Re: Ecology B/C

Postby MattChina » March 30th, 2018, 3:15 pm

Answer
Deserts are so dry because there is very little precipitation/humidity.
but why is there little precipitation and humidity
Wind traveling there cannot pick up moisture.
ok sure Your turn
2019 events: Water Quality, Battery Buggy, Elastic Launch Glider, Density Lab, Circuit Lab, Thermodynamics
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kate!
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Re: Ecology B/C

Postby kate! » April 4th, 2018, 8:39 am

Questions
1. What is the difference between survivorship curves and the life table? Name and describe the three curves and three types of life tables. 2. Why are there different soil types in the cold deserts and the tundra, and what are their respective soil types? 3. Name 2 natural causes of NO[sub]x[/sub]/SO[sub]2[/sub] and 2 causes by humans.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

drcubbin
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Re: Ecology B/C

Postby drcubbin » April 4th, 2018, 8:55 am

but why is there little precipitation and humidity
Wind traveling there cannot pick up moisture.
ok sure Your turn
Why would wind (do you mean the warm desert air?) not "be able" to pick up moisture? Shouldn't warm air have the capacity to hold more water then cold? Based on that fact alone, warm air should be able to accommodate a whole mess of water. Correct?

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kate!
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Re: Ecology B/C

Postby kate! » April 4th, 2018, 9:14 am

Why would wind (do you mean the warm desert air?) not "be able" to pick up moisture? Shouldn't warm air have the capacity to hold more water then cold? Based on that fact alone, warm air should be able to accommodate a whole mess of water. Correct?
https://cals.arizona.edu/~lmilich/dry.html
This website explains that in these cells, only dry air is descending on deserts, since cool air descends and is able to hold less moisture.
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, and more water, yay for the third time!

drcubbin
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Re: Ecology B/C

Postby drcubbin » April 4th, 2018, 9:23 am

Why would wind (do you mean the warm desert air?) not "be able" to pick up moisture? Shouldn't warm air have the capacity to hold more water then cold? Based on that fact alone, warm air should be able to accommodate a whole mess of water. Correct?
https://cals.arizona.edu/~lmilich/dry.html
This website explains that in these cells, only dry air is descending on deserts, since cool air descends and is able to hold less moisture.
Thanks Kate. I do understand, having taught Earth Science for many years, but I was hoping to get student responses (rather than a link) on this beyond the "wind traveling there cannot pick up moisture" since they will be taking the State test next week :) Thanks again!


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