Humans and ostriches bipeal. HOMEWORK HELP?

Question

What are 2 general explanations for similarity for the example above?

Which explanation is more likely to be correct for the example and why?

Answer 1

Ostriches and humans each have two feet, which are used for walking or running. Placing one foot in front of the other results in a forward locomotion.

Two feet also means they can use bicycles or tricycles with two pedals, one for each foot.

Blessings ;)

Answer 2

1)  Convergent evolution.  This is when two unrelated animals develop superficial similarities because of natural selection.  Examples are dolphins and sharks; bats and birds; or, in this case, ostriches and humans.

2)  They could be closely related.  Not likely in this case, since ostriches are birds and humans are mammals.

Answer 3

All birds walk on two feet (when they are on the ground.)

Answer 4

you should have paid attention in class

Answer 5

You mean they a bipedal

Answer 6

Two feet

Answer 7

1 Humans and ostriches share a common ancestor. 2 Two legs may be more efficient for running long distances and they convergently evolved this characteristic.

2 is more likely.  Humans and birds are separated by hundreds of millions of years and our ancestors past 10 million years ago were not bipedal.