× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
r
3
y
2
e
2
p
2
a
2
c
2
o
2
m
2
k
2
s
2
P
2
i
2
Home Q & A Board Biology-Related Homework Help General Biology
New Topic  
tere tere
wrote...
Posts: 500
Rep: 0 0
6 years ago
What is the most abundant metabolic waste produced by animals?
 
  a. ketones
  b. sodium ions
  c. ammonia
  d. uric acid
  e. water

Question 2

What is the main reason that duck-billed platypuses are classified as mammals rather than birds? Consider that they possess a bill, as do birds, and lay eggs rather than give birth to live young like other mammals.
 
  What will be an ideal response?
Read 42 times
2 Replies

Related Topics

Replies
wrote...
#1
6 years ago
Answer to q. 1

c

Answer to q. 2

Platypuses are classified as monotremes, a group of mammals that lay eggs. Once the young hatch from their eggs, they cling to the belly of the mother and take in milk that oozes from openings in the mother's skin. Platypuses also are covered with fur rather than feathers.
tere Author
wrote...
#2
6 years ago
I wanna give this person a hug.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1117 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 399
  
 1062
  
 1062
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 436
Previous poll results: What's your favorite math subject?