Question

Some bacteria in our digestive system help us digest our food. They may have originally been parasites, but we have evolved a symbiotic relationship with them in which they break down some of our wastes and we provide them with a habitat. What type of evolutionary process is this?
A. Speciation
B. Coevolution
C. Selective pressure
D. Extinction

Answer 1

is the answer Coevolution

Answer 2

What is the leading cause of species extinction currently?
A. Use of fossil fuels
B. Habitat destruction and degradation
C. Air pollution
D. Automobiles

Answer 3

The answer is Coevolution for the first

Answer 4

For the second one it's B. Habitat destruction and degradation

Answer 5

What type of ecological pyramid depicts the populations of organisms in each trophic level?
A. Biomass pyramid
B. Energy pyramid
C. Numbers pyramid
D. Food pyramid

Answer 6

wrd !!

Answer 7

c

Answer 8

The pyramid of numbers represents the number of organisms in each trophic level.

Read more: Types of Ecological Pyramids | eHow.com http://www.ehow.com/list_6068772_types-ecological-pyramids.html#ixzz2E1K29blE

Answer 9

Theres my back up xD

Answer 10

Which type of species is more likely to go extinct?
A. An invasive species
B. An alien species
C. A generalist species
D. A specialist species

Answer 11

b

Answer 12

What type of wild animal is it safe to feed or approach?
A. A rabbit
B. A wolf
C. A snake
D. Never approach an unknown animal

Answer 13

c

Answer 14

Never approach an unknown animal

Answer 15

rofl it's d or a

Answer 16

c

Answer 17

But it's usually D

Answer 18

You never approach a snake and try an feed it unless it has been trained

Answer 19

is c correct

Answer 20

D is correct

Answer 21

What is the movement of individuals from one area to another called?
A. Dispersion
B. Migration
C. Life cycle
D. Life span

Answer 22

never approach a wild animal or unknown animal, because animals display different behavioural patterns, such as being aggressive, so u never know what the outcome could be !

Answer 23

i think the best answer would be Dispersion !

Answer 24

No, I think it is Migration.

Answer 25

The answer is Migration

Answer 26

:(

Answer 27

You ok?

Answer 28

Yes! are you ?

Answer 29

Yes