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Anton [14]
3 years ago
12

What's the main characteristic of porosity?

Biology
1 answer:
aev [14]3 years ago
6 0

Answer:

The answer should be D

Explanation:

because poroslty of a rock is a measure of its ability to hold a fluid. mathematically, it is the open space in rock divided by the total rock volume.

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What is placebo and why is it used in some experiments
Hoochie [10]
A placebo is kind of a "fake" treatment but, typically the person receiving a placebo is unaware it has no medical effect on them so they believe they are feeling better. For example, a lot of anxiety meds are placebos and people don't know so their brain tricks them into thinking they are feeling less anxious. This could be used in experiments where a group believes they are affected to see how they react
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3 years ago
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The left side of the brain notices _____, while the right side grasps _____ quizlet
Leya [2.2K]
<span>The left side of the brain notices details, while the right side grasps the bigger picture. That's the answer for the question that you provided.</span>
7 0
3 years ago
In two or more sentences, analyze why internal fertilization is more efficient than external fertilization?
almond37 [142]

Answer:

Although more offsprings are produced by the process of external fertilization but the process of internal fertilization is more efficient as compared to external fertilization. This is because, in external fertilization, it is more difficult for the sperm to find the egg and fertilize it. Even after fertilization, it might be that the zygote gets eaten up by a predator. There are none such risks in internal fertilization. The zygote is protected during the internal fertilization which makes this process more efficient.

5 0
3 years ago
In a flowering plant, blue flower (B) trait is dominant to white flower (b) trait. A true-breeding blue flower plant (BB) is cro
scoundrel [369]

Answer: D. 100%

Explanation:

One parent is with is a true breeding blue flowering plants this means the two alleles of the genotype are homozygous dominant alleles (BB).

The other parent is a true breeding with flowering plant, this means the two alleles of the genotype are homozygous recessive alleles (BB).

When both parents are crossed, the possible genotype outcome is

B B  *  b b

Bb Bb Bb Bb

Therefore since the blue flowering plant allele (B) is dominant to the white flowering plant allele (b) the probability of an offspring outcome to be a blue flowering plant is 4/4 which is 100%.44

Answer is 100%

3 0
4 years ago
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Suppose that in humans the ability to roll the tongue (R) is dominant to being unable to roll it (r), and having freckles (F) is
tatuchka [14]

Answer:

1/4

Explanation:

A heterozygous woman for both traits (RrFf) marries with a man with no freckles (ff) who can't roll his tongue (rr).

The cross is: RrFf X rrff.

The woman can produce the gametes <em>RF, Rf, rF </em>and <em>rf</em>

The man can only produce <em>rf </em>gametes.

<u>The possible offspring that can arise from the combination of those gametes is:</u>

  • 1/4 RrFf Freckled, tongue-rolling
  • 1/4 Rrff Freckled, unable to roll tongue
  • 1/4 rrFf Not freckled, tongue-rolling
  • 1/4 rrff Not freckled, unable to roll tongue
4 0
3 years ago
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