Sherebanu
Badges: 0
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Report Thread starter 4 years ago
#1
Hi. Please can yoh help me with this question
Why do mamals need a circulatory system and a respiratory system?
Its for 4 marks please i need the correct answers
0
reply
Hajra Momoniat
Badges: 16
Rep:
? You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report 4 years ago
#2
Mammals need a circulatory system as they have a large surface area to volume ratio and a larger diffusion pathway therefore we need many internal tissues to support the circulation and respiration. Mammals are also very active so they use oxygen more quickly therefore we produce more waste products quickly.

Hopefully this helps
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

How would you describe the quality of the digital skills you're taught at school?

Excellent (18)
8.29%
Okay (64)
29.49%
A bit lacking (81)
37.33%
Not good at all (54)
24.88%

Watched Threads

View All
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise