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3 years ago

pls help The teacher made me watch a video and I couldn't do it because I don't know much English, please help

Biology

1 answer:

photoshop1234 [79]3 years ago

4 0

Answer:

1.species

2.extinct

3.survive

4.basic

5.compete

6.variations

7.exactly

1a.orgsnisms

2a.enviroment

3a.natural selection

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Will give thanks!!! HELP NEEDED

Sedbober [7]

Genetic variation is caused by mutations in the gametes and meiosis.

The large ears of the rabbits may help them hear when predators are coming. If they hear them coming, then they may be able to escape.

A polar bear with dark fur would be more obvious to its prey, who would more easily avoid him. The other white ones can blend in better and have a less chance of being detected by prey.

Organisms have genetic variation
The conditions change
The ones better at coping... survive
Survivors breed and pass on their variation
natural selection occurs

Some bacteria are more resistant
Antibiotic is added
Some bacteria survive
The survivors reproduce
Low levels of antibiotic remain

Charles Darwin

Hope I helped

8 0

4 years ago

In fruit flies, purple eyes and ebony body are traits that display autosomal recessive patterns of inheritance. In a

Sergio039 [100]

Answer:

d. The calculated chi-square value is 10.48, and the critical value is 11.35.

Explanation:

The correct option would be option d.

Using the formula for calculating the Chi square ( $X^2$ ):

$X^2 = \frac{(observed frequency - expected frequency)^2}{expected frequency}$

For normal eye, normal body;

$X^2 = \frac{(187 - 171)^2}{171}$ = 1.50

For normal eyes, ebony body;

$X^2 = \frac{(49 - 57)^2}{57}$ = 1.12

For purple eyes, normal body;

$X^2 = \frac{(41 - 57)^2}{57}$ = 4.50

For purple eyes, ebony body;

$X^2 = \frac{(27 - 19)^2}{19}$ = 3.37

Total $X^2$ = 1.50 + 1.12 + 4.50 + 3.37 = 10.48

Degree of freedom = 4 - 1 = 3

Critical value of $X^2$ = 11.35

Hence, the calculated chi-square value is 10.48, and the critical value is 11.35.

The correct option is d.

7 0

3 years ago

When doing science as inquiry, you should have some idea of what you think the final result will be. A. True B. False

geniusboy [140]

I'm sure it's true since before doing a science experiment/If you're trying to figure something out, you need a Hypothesis.

5 0

3 years ago

Read 2 more answers

In order to avoid peer pressure, it is important to recognize __________.

rewona [7]

in order to avoid peer pressure it is important to recognize that you are able to fit in the society and try to think about the other alternatives and activities by keeping on communication activities ..

6 0

3 years ago

A virtual image seems to come from

Nata [24]

Answer:

the answer is A on edgunuity

Explanation:

A virtual image seems to come from

A.)behind the mirror.

B.)the surface of the mirror.

C.)in front of the mirror.

3 0

4 years ago

pls help The teacher made me watch a video and I couldn't do it because I don't know much English, please help ​

pls help The teacher made me watch a video and I couldn't do it because I don't know much English, please help