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WINSTONCH [101]
4 years ago
11

Which is one source that scientists use to

Biology
2 answers:
ozzi4 years ago
8 0

Answer:

fossils frozen in glaciers.

Explanation:

Hope it helps.

Artemon [7]4 years ago
5 0

Answer:

a

Explanation:

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1) Dynasty

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3 years ago
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Please provide details for this problem. I got 3.24; therefore accept the null hypothesis.
juin [17]

Answer:

See the answer below

Explanation:

The Chi-square (X^2) is calculated by the formula:

X^2 = \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency

A standard dihybrid cross is expected to give 9:3:3:1 phenotypic ratio.

Phenotype               O                  E                                  X^2

Round yellow          104       9/16 x 160 = 90          \frac{(104 - 90)^2}{90} = 2.18

Round green            27        3/16 x 160 = 30           \frac{(27 - 30)^2}{30} = 0.30

wringled yellow         27        3/16 x 160 = 30           \frac{(27 - 30)^2}{30} = 0.30

wrinkled green          2          1/16 x 160 = 10              \frac{(2 - 10)^2}{10} = 6.40

Total  X^2 value to two decimal places = 9.18

Degree of freedom = (n-1) = 4 -1 = 3

Critical  X^2 value at 95% probabillity level = 7.815

<em>Since the calculated  </em>X^2<em> si more than the critical  </em>X^2<em> value, </em><em>the null hypothesis is rejected. </em>

7 0
3 years ago
NEED HELP ASAP:
Anni [7]

Answer:

A but i might be wrong

Explanation:

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Eliza wants to increase the yield of her herb garden A friend suggests that Eliza pinch off the tops of the plants as they grow
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3 years ago
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