Question

Just need some help with checking my answers

1. In Europe, three lineages of bears evolved from a common ancestor. Two of those lineages led to present-day black bears and brown bears. The third lineage led to cave bear that went extinct 24,000 years ago. Which of the following could explain why only one group of bears went extinct?

Individual cave bears must not have been able to adapt to changing condition as quickly as brown or black bears **
One group of bears was less highly evolved that the other two groups and was destined to die out
Some environmental change severely threatened cave bear survival but not the survival of brown or black bears
Random chance led to the extinction of cave bears and survival of brown and black bears

2. Suppose scientist found a new fossil that indicated it was a primitive mammal. Relative dating techniques place the age of this fossil at a much earlier time than mammals were thought to exist. What effect will this finding have on understanding of the history of life?

The split between mammals and non-mammals in the tree of life needs to be shifted back**
A new branch needs to be added to the tree of life
An existing branch on the tree of life needs to be removed
Other fossils need to be rested to be sure that the ages assigned to them are not in error

Answer 1

1. wrong. Evolution is not concerned with individuals adapting, but with genetic mutations or differences which favor survival and repoduction.

2. wrong. You just discovered an unknown branch of aminalia in the "tree of life'

Answer 2

^^^Thank you!!!

Answer 3

This is for the whole Practice Test if you're a connections academy student or just randomly have these questions for some homework.

These are in order, I'm not following what anonymous posted.

1.B
2.C
3.A (@bobpursley you were so wrong, anonymous was correct)
4.D
5.C
6.D
7.D
8.C
9.C
10.A

I just took the practice test and these are the answers.

I hope this helps to anyone in need of answers.

Answer 4

@Angel

Angel's right with all of the answers! I got a 100 on the test. Thank you.

Answer 5

they were correct thanks

Answer 6

correct

Answer 7

1.B
2.C
3.A
4.D
5.C
6.D
7.D
8.C
9.C
10.A
i got 100% trust me

Answer 8

Angel and I'm just a girl with no friends are correct! 100% Thanks!

Answer 9

It's true!

Answer 10

Stop with the direct answers and explain. I bet some people would get a F when the Fcat or whatever comes. YOU ARE SUPPOSE TO LEARN. Go back in the lesson! Please!

Answer 11

Angel and I'm just a girl with no friends are right!! listen to them!!😋

Answer 12

MissSmarties, maybe we don't like to learn unnessecary shii like this. Adults need to wake up and realize they are brainwashing us.

Answer 13

Angel and girlwithnofriends are correct, make sure you perposly get 1 or 2 wrong so your teachers do not think your cheating. sorry for my bad spelling

Answer 14

@Dr. Doctor


Thats even worse!

Answer 15

1.B
2.C
3.A
4.D
5.C
6.D
7.D
8.C
9.C
10.A

Answer 16

Jenna, I seriously hope you're kidding. It is very important to learn these things, teachers will even explain why it's important to learn it. It is incredibly ignorant for you to say adults are brainwashing kids.

Answer 17

i am only on this site for one reason and one only, to dubble check my work.
i get right answers and use my knoledge to get them right.
i am a seccond geusser i never trust my self.

Answer 18

double* knowledge* guesser*

Answer 19

Thanks angel you were completely right but no need to call someone out for being wrong

Answer 20

So, mine only had 9 questions and it looks like yours had 10, so here's the 9 question version answers:
B
C
A
D
C
D
C
C
A

Answer 21

Thaddeus is correct, if you have a practice with 9 questions, use his answers.

Answer 22

Unit review lesson 8 9 answers
1. B
2. C
3. A
4. D
5. C
6. D
7. C
8. C
9. A

Answer 23

1. B
2. C
3. A
4. D
5. C
6. D
7. C
8. C
9. A