Question

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Answer 1

@AccessDenied @zepdrix @tafkas77

Answer 2

Give just a sec, okay? I'm helping someone right now. I'm almost done with them . :)

Answer 3

I'm on two different questions at once, ha ha. :)

Answer 4

oh ok! Thanks!

Answer 5

You are a great helper!

Answer 6

Aww, thanks. I'm almost done with them! :D But I've reviewed your question, so I can definitely help you with this. Am I correct in saying that you're studying evolution right now?

Answer 7

yup you are correct!

Answer 8

Wow, I'm good... :) So let's get started.

Answer 9

ok!

Answer 10

so i have no idea what the questionis asking... why is it asking about fitness?

Answer 11

Fitness, in this case, doesn't have much of anything to do with being in shape.

Answer 12

oh ok .. what is it talking about then?

Answer 13

Just a sec... typing... :)

Answer 14

sure :)

Answer 15

In biology, "fitness" is talking about an organism's ability to survive and produce healthy offspring, as well to continue the species. This question deals with natural selection and evolution. That's where you'll hear "the survival of the fittest." Look at the backbone in this whale. The backbone is being used to help the whale swim, and the whale needs it to survive. Whales NEED to swim. A whale can't produce healthy babies if it can't even swim! Vestigial structures are structures in an organism that aren't being used anymore, basically. The whale doesn't need a femur (leg bone) because it doesn't even have legs. However, the fact that whales have these causes scientists to believe that whales used to have legs, and evolved beyond them - which is proof for evolution, in their eyes. Do you get this?

Answer 16

that makes sooo much sense! I do get it!

Answer 17

thank you so much! You are the best! :)

Answer 18

Awesome! But don't forget, other scientists believe that the pelvis/femur in the whales are actually necessary to it's evolutionary fitness, because those are still there, even today. They just haven't decided what the purpose of them are yet. It's a big debate with scientists right now, ha ha. :)

I'm glad I could help!!!

Answer 19

Thanks again! :)

Answer 20

you're welcome! Tafkas out! :D