Question

Could someone please help me?(:

One possible cause of extinction is
a. unwillingness of species to mate.
b. low genetic diversity.
c. no desire to eat. Incorrect
d. lack of sleep.

Biological diversity has been proven to ________ over time.
a. remain unchanged
b. become greater
c. decrease
d. alternate

Answer 1

hmm for the first one, i'm thinking either a or b

Answer 2

let me look something up though

Answer 3

Okay(:

Answer 4

are you able to choose more than one answer?

Answer 5

Nope :P

Answer 6

well in this article

http://www.guideto.com/science-nature/life-science/animals/worlds-top-most-engangered-species.html

it says that the giant panda is going extinct because it is unwilling to mate

Answer 7

but low genetic diversity also plays a factor in extinction

my guess is that they want the best answer, so it's probably choice A

Answer 8

Okay(: Any idea about the second question?

Answer 9

reading about that now

Answer 10

according to this page

http://www.priweb.org/globalchange/bioloss/bl_01.html

biodiversity has this upward trend...basically life gets more diverse on it's own as time goes on

Note: it may seem the biodiversity has gone down since the destruction of habitats and pollution kills of many species, but humans have only done this for a very short period of time (compared to the overall age of the earth and when life started showing up)

Answer 11

So it would be B? It becomes greater?

Answer 12

yes that's what I would say

Answer 13

okay(: Thank you so muchhh(:

Answer 14

you start with something simple...like an amoeba

then that evolves into other things (like a crustacean) then that becomes an amphibian...etc etc

Answer 15

think the tree of life

Answer 16

np