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babunello [35]
3 years ago
15

When a stream's velocity decreases from 300 to 200 centimeters per second, which size sediment will be deposited?

Biology
1 answer:
tigry1 [53]3 years ago
6 0

Answer:boulders

Explanation:

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In the peppered moth scenarios what is the variation? And the selection?
Morgarella [4.7K]

Variation is number of alleles for the wing color of the peppered moths. The wing color ranges from pure white to pure back.

Selection pressure is predation by birds.

Explanation:

In the wake of the industrial revolution, white-winged peppered moths had a large allelic frequency in the population compared to black-winged peppered moths. However, when the environment changed due to soot produced by industries (making the environment darker) white-winged peppered moths reduced while that of black moths increased.

This is because black moths were able to blend in and camouflage in the dark environment than white-winged peppered moths that stood out to their predators. Black moths, therefore, had an increased chance of reaching adulthood and passing their genes to the next generation. This increased the allelic frequency of black-winged peppered while that of white-winged moths reduced in the population.

Learn More:

For more on natural selection of peppered moths check out;

brainly.com/question/12918325

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8 0
4 years ago
Chromosomes are strands of dna wound around some proteins called
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The proteins are called Histone proteins. Chromosomal DNA is packaged such that the strands of DNA are wound around histone proteins and fold into complex ways to form chromosomes. The histone proteins are positively charged proteins that strongly adhere to negatively charged DNA and form complexes called nucleosomes. Each nucleosome is composed of double-helical DNA wrapped. 
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3 years ago
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Bacteria use_______reproduction to create offspring.
zavuch27 [327]
Asexual reproduction
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The Earth is about 4.6 billion years old. However, the oldest sea floor is only about 180 million years old. What do you think i
natita [175]

Answer:

The seafloor is only 180 million years old due to the process of subduction. The floor of the sea's tends to get colder and denser with the passage of time. At a certain time, the seafloor becomes so dense that it sinks in the upper mantle. The Earth's crust cannot undergo this process and hence has oldest rocks. We can say that the seafloor is less than 180 million years old because it is typically recycled back into the mantle of the Earth.

7 0
4 years ago
Producers are ...............
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Answer:

B) Autotrophes

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Producers are <u>autotrophes</u> because, they make their own food. Hence, the option (b) is the correct answer.

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