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USPshnik [31]
3 years ago
10

I NEED QUICK BIOLOGY HELP!

Biology
2 answers:
antoniya [11.8K]3 years ago
8 0
D  lowering the activation energy of a reaction.
vazorg [7]3 years ago
4 0
<span>D) lowering the activation energy of a reaction.

I hope this helps!
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Why do scientists use light-year instead of Astronomical Units to measure the distances between stars?
vitfil [10]

Answer:

well AU is only for inside a star system and the number of AU would be too high, so light years are easier its like saying ur 6 feet instead of 72 inches or in centimeters

Explanation:

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2 years ago
Assume that in cattle a spotted coat is dominant to an even coat, short horns are dominant to long horns, and the traits for coa
kow [346]

Answer:

C. 1/4

Explanation:

Let's assume that the allele for the spotted coat is "S" and the one for the even coat is "s". The allele "L" gives short horns while the recessive allele "l" imparts long horns. The genotype of the cattle heterozygous for both traits would be SsLl. A cross between two heterozygous cattle would produce progeny in following phenotype ratio=

9 spotted coat and short horns: 3 even coat and short horns: 3 spotted coat and long horns: 1 even coat and long horns.

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An element's atomic number is 39. How many electrons would an atom of this element have?
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