Question

Estimating the rate of extinction is difficult because
I. Rate of biodiversity loss will likely increase as human population rises
II. Only 1.8 million species have been identified; those not yet identified may go extinct before they are recorded
III. very little is known about all the ecological roles that organisms play in nature

I only
II only
III only
I, and III
I, II, and III

Answer 1

@iheartfood

Answer 2

@iheartfood

Answer 3

I believe 1 and 3 are true, but I am not crtain

Answer 4

certain*

Answer 5

thankyou

Answer 6

yes, i think 1 and 3, because the rate of extinction can still be estimated from the species that have been recorded :) those not recorded that go extinct weren't taken into account in the first place, so i don't think it affects it :)

Answer 7

cool thnxs!

Answer 8

2 is deifnitely true

Answer 9

I don't see why you guys are saying 2 isn't true

Answer 10

so then it would be 1,2,3

Answer 11

Only 1.8 million species have been identified; those not yet identified may go extinct before they are recorded
<<< that means that it's hard to estimate the rate of extinction because speicies that we haven't even identified are going extinct

Answer 12

ohh yes, that's true!! didn't think of it like that, oops! so actually, all three options make it hard!

Answer 13

where does the number "1.8 million species " come from? idk, I mean again, science is my worse subject, but I was just saying my opinion.

Answer 14

I can definitely be wrong, no one is perfect. (perhaps you are an exception) jk

Answer 15

@SolomonZelman that figure is probably contained in the lesson for @INEEDHELPNOWPLZ that's how these problems are usually done

Answer 16

yes, I could imagine 1/8 is from here course material;)

Answer 17

1.8*

Answer 18

hahaha yeah :)

im guessing it's the hypothetical number (maybe not hypothetical?) of species

Answer 19

I didn't think though that there are still unidentified species... and if they are unidentified, how do we know about that in the first place?

Answer 20

yeah, that's what i was thinking about originally, but perhaps the number of species that we haven't discovered yet makes it so difficult to estimate? not sure... this one could go either way really, depending on how the teacher looks at it i suppose haha

Answer 21

I'm gonna go with 1,2 and 3