Can you help me with my Biology
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Can you help me with my Biology

[From: ] [author: ] [Date: 11-06-10] [Hit: ]
watch out for me. Thanks in advance to those of you who ACTUALLY help.1. Identify how temperature is a limiting factor for polar bears.2. Predict how unfavorable abiotic and biotic factors affect a species.......
Hello, I wasn't able to go to School yesterday because of a Dentist and Eye appointment and I need help with the homework I missed. There are a lot of questions so, I may make more than one post. So, watch out for me. Thanks in advance to those of you who ACTUALLY help.

Section 1

1. Identify how temperature is a limiting factor for polar bears.
2. Predict how unfavorable abiotic and biotic factors affect a species.
3. Describe how ranges of tolerance affect the distribution of a species.
4. Classify the stage of succession of a field that is becoming overgrown with shrubs after a few years of disuse.

Section 2
1. I can do this one.
2. Describe the abiotic factors that determine a terrestrial biome.
3. Summarize variations in climate among three major zones as you travel south from the equator toward the south pole.
4. Indicate the differences between temperature grasslands and tropical savannas.
5. Compare and contrast the climate and biotic factors of tropical seasonal forests and temperature forests.

Section 3
1. List the abiotic factors that are used to classify aquatic ecosystems.
2. Apply what you know about ponds. Do you think the same organisms that would live in a seasonal pond would live in a pond that existed all year-round? Explain.
3. Describe an ecological function of an estuary.
4. Describe the zones of the open ocean.
5. Infer how autotrophs in the abyssal zone of the ocean are different from those pf the photic zone.

Once again, thank you so much for the help.

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Section 1
1) Polar bears are designed for cold weather, so slight changes in temperature would be drastic for them.
2) Polar bears = species and unfavorable abiotic factor = heat. The species would be wiped out or would adapt to meet the environment.
3) If males constantly fight each other, the species needs to be separated into suit the attributes.
4) Climax Succession

Section 2
2) http://bcs.whfreeman.com/thelifewire/content/chp56/5602002.html use this site to find the info.
3)
4)
5)

Section 3
1) Temperature, current, etc.
2) No, because the difference in temperature would cause some organisms that can't adapt to it not to live there.
3) No idea.
4)
5) The farther down you go in the ocean, the less light there is. So, autotrophs that require light to do photosynthesis are at a disadvantage. The plants that are even farther down where there is no light at all use chemosynthesis. This process uses chemicals instead of light to produce food.
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