Kristina Said:

What Kind of classes should I take if I want become a marine biologist?

We Answered:

Don't waste your time and money. There are no jobs in Marine Biology at the Bachelor's degree level except the occasional contract counting worms in fish guts.

Joel Said:

Which of the following are likely topics for a course in biology?

We Answered:

its all seems to be in the line of biology

Elsie Said:

i need some help in these questions to finish for a test plz help to answer some questions?

We Answered:

Funny, you said in another category, you were taking an online test. You are abusing this resource. Your parents must be really proud of you.
http://answers.yahoo.com/question/index?…

Brandon Said:

Can anybody help me learn English?

We Answered:

I could be your Pen Pal but you can't expect me to do your entire homework for you. I can help you in a certain area so you can understand.

Debbie Said:

Biology Help? Multiple choice!?

We Answered:

1. Early hunters and gatherers in North America are responsible for...
b. a major extinction of many large animals

2. A resource such as air or parts of the oceans, that is open to anyone is often preserved and protected by.
c. the country near which it is located

3. Which is a way to limit deforestation?
b. plant and harvest trees on tree farms

4. The sulfur and nitrogen compounds in smog combine with water to form
c. acid rain

5. An example of a sustainable-use practice is the use of beneficial insects like ladybugs to
c. control unwanted pests
(I wonder if we could loose them on the internet...)

6. The number of different species in the biosphere is called
a. biodiversity

7. Biodiversity is valuable in the biosphere because it
c. is the biological life-support system of our planet

8. One property that makes DDT hazardous over is that DDT is
... need to know what word(s) follows "over" ...
None of the answers look right to what I imagine is missing from the question. DDT is toxic to *insectivores* primarily...

9. All of the following are threats to biodiversity EXCEPT...
d. species preservation

10. Habitat degradation can be limited by
b. reducing pollution
c. establishing habitat corridors
... could be either one ...

11. Reintroduction programs involve the
... sorry, I'd have to take the class, like you should have,

12. The removal of coral reefs by people is an example of habitat
c. loss

13. National parks help prevent the extinction of many species by
a. preserving the species' habitat

14. Problems associated with habitat fragmentation can be lessened by
b. establishing habitat corridors

15. DDT had been passed to large birds, such as the bald eagle, through
b. food chains

16. Acid precipitation is caused by
d. burning fossil fuels

17. As DDT moves up the trophic levels in food chains, its concentration
c. increases

18. Protecting ecosystem diversity is a goal of
b. conservation biology

19. The major cause of ozone depletion is
a. nitric acid - no, because nitric acid is formed in the ozone layer when water vapor (the correct answer) is present.
c. chlorofluorocarbons - not major, but significant.
d. ultraviolet light - UV both makes and destroys ozone (and loads of it), but this establishes the baseline of ozone levels at any instant, so would not be a contributor to depletion (until the Sun cools, and makes less UV-C but not significantly less UV-B)
... so e. *water vapor* is the major cause of ozone depletion, with c. coming in distant second