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Leona [35]
2 years ago
9

Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ c

olored moths.
Biology
1 answer:
Mashcka [7]2 years ago
4 0

Answer:

Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.

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A researcher investigates a blood disease carried by birds. She isolates an organism from the blood of an infected bird. She fin
Airida [17]

Note each of them:

Archaea is a single-celled microorganism with no nucleus

Bacteria is a unicellular microorganism with cell walls but lack organelles

Sarcodina is a phylum with temporary extensions of the cell. They can be parasitic.

Protista is an eukaryotic organisms that is not an animal, plant, or fungus.

The organism found is unicellular (rules out Archaea), with cell walls (characteristics of bacteria), and the ability to produce spores.

I believe that Bacteria (B) is your best answer

hope this helps

4 0
2 years ago
Read 2 more answers
Select the three factors from the choices below that determine the size of the actual focal spot on the target anode.
Zarrin [17]

Answer: A focal spot in the x-ray setup is the area of the anode surface which receives the beam of electrons from the cathode. It is the apparent source of x-rays.

Below are some of the factors that affect its size.

Explanation:

Size of the focal spot depends on

* angle of the anode

Other prime factors that affect x-ray emission; under the control of the radiographer includes;

• Miliamperage-second (mAs)(tube current measurement)

• Kilovoltage (kVp) Controls both the quantity and quality of the x-ray beam with the speed and energy.

• Distance (d) - Related to tube design and construction.

• Tube housing

• Target material

• Filtration

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8 0
2 years ago
For each food listed below choose whether it has it all single carbon to carbon bonds or at least one double carbon to carbon bo
RSB [31]

Answer:

                                                                                                                              Peanut butter            

All single carbon-to-carbon bonds

                                                                                                                    Sunflower oil  

At least one double carbon-to-carbon bond

                                                                                                                                Cheddar cheese  

All single carbon-to-carbon bonds

Explanation: I did it on Edge 2020 and it was correct.

8 0
2 years ago
During the year the beetles reached carrying capacity, a flood in the region decreased the population to about 77 beetles per he
tensa zangetsu [6.8K]

Answer:

After the flood the total number of beetles = number of beetles per hectare × 115 hectares = 8,855 beetles.

The carrying capacity is 14,600 beetles.

Explanation:

8 0
1 year ago
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Why do you think the snowy owls only appear when
miv72 [106K]

Answer:

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