Question

Which of these compounds is excreted by the skin?
A. carbon dioxide

B. urea

C. oxygen

D. ammonia

Answer 1

whats your guess?

Answer 2

I wanna guess B

Answer 3

ok, do you know what urea is?

Answer 4

i suggest using google, as this is a road question

Answer 5

broad*

Answer 6

absolutly ammonia is not the answer

Answer 7

yes. and oxygen can be out

Answer 8

so the answer is A?

Answer 9

no co2 is produced through our lungs

Answer 10

YES

Answer 11

ans is b)urea or d)ammonia

Answer 12

Co2 can be exhaled through excess heat

Answer 13

just like we sweat

Answer 14

you can see
http://www.wisegeek.com/what-is-excretion.htm

Answer 15

o2 is inhaled and co2 is exhaled through nose or skin

Answer 16

nose

Answer 17

or skin

Answer 18

http://www.wisegeek.com/what-is-excretion.htm
you can see in 3rd para

Answer 19

ammonia is not the answer lol Shakir

Answer 20

the answer is Urea

Answer 21

yes

Answer 22

that only i had shown in dat link

Answer 23

you right

Answer 24

if you r satisfied with my answer u can givi medals