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skad [1K]
3 years ago
8

In an observational study researchers try not to

Biology
1 answer:
o-na [289]3 years ago
5 0

Answer:

D

Explanation:

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the variety of life in the world or in a particular habitat or ecosystem

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You have a 12 sided cube that is numbered from 1 to 12. What is the probability of rolling a five?
nadezda [96]

Answer:

1/12

Explanation:

Formula for calculating probability:

            Probability of an outcome A =

     Number of favorable outcomes of A / Number of possible outcomes

       P ( A )  = number of favorable outcomes to A / total number of outcomes

⇒ The number of times 5 can appear when you roll the 12 sided cube once is one time   =  1

⇒ The total number of possible outcomes is 12 - meaning you can roll any number between 1 - 12 when you roll the dice once.   = 12

Therefore the probability of rolling 5  = 1 /12

 Probability = 1 / 12

hope this help and brainiest please. thx

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How much more CO2 is in the atmosphere today compared to 150 years ago?
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Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But humans have burned so much fuel that there is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place.

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Explain how bacteria are both helpful and harmful to our bodies.
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Sample Response:

Bacteria are helpful because they produce oxygen, which our bodies need to breathe, and they help us to digest the food we eat. Bacteria are also helpful because they are used in medicine to help us overcome disease. Bacteria are harmful because they can cause tooth decay and illnesses that can be either common or quite serious.

This is a sample response, so it's 100% correct. Peace!

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Predict the phenotype for expression of the E. coli trp operon enzymes for the following mutants: a) A to U mutation at position
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I think the answer is a I believe
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