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Georgia [21]
4 years ago
9

Which is a unique feature of Mercury? A. It is the smallest planet and has the shortest period of revolution around the sun. B.

The thick atmosphere—made mostly of carbon dioxide—absorbs solar radiation, heating up and helping make the atmosphere very hot. C. The planet’s surface is covered with red, iron-oxide dust. D. It is the only planet with permanent liquid w
Biology
1 answer:
Lorico [155]4 years ago
8 0
A.  It is the smallest planet and has the shortest period of revolution.  This is true because B. is shared with Venus, C. is shared with Mars, and D. is shared with Earth, making A. the only thing unique to Mercury.
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Before winter animals that hibernate often prepare by eating foods high in fat. How is this behavior helpful?
bearhunter [10]
During hibernation, the animals don't eat anything.....So, when they are hibernating, those animals can get energy by burning the the stored fat from the fatty food and can survive until they wake from hibernation

3 0
4 years ago
What does entropy measure?
babymother [125]
Entropy means that system naturally progress from order to disorder. Entropy measures the level of this disorder or messiness. We can measure increase or decrease of entropy, for example by answering the question 'How a human being can avoid decay?' or by being concentrated on WHY the system is more organized and why it tends to grow.
6 0
3 years ago
Read 2 more answers
In an experiment, a certain colony of bacteria initially has a population of 50,000. A reading is taken every 2 hours, and at th
Iteru [2.4K]

Answer:

1) Recursive definition: p_n = (50,000)3^n

2) At the beginning of the 4th interval

Explanation:

1)

The initial population of the bacteria at time zero is

p_0 = 50,000

Here we are told that the reading is taken every two hours; we call this time interval "n", so

n=2 h

And also, after every time interval n, the number of bacteria has tripled.

This means that when n = 1,

p_1 = 3 p_0

And when n=2,

p_2 = 3 p_1 = 3(3p_0)=9 p_0

Applied recursively, we get

p_n = 3^n p_0

And substituting p0,

p_n = (50,000)3^n (1)

2)

Here we want to find at the beginning of which interval there are

p=1,350,000

bacteria.

This means that we can rewrite eq.(1) as

1,350,000=(50,000)3^n

By simplifying,

27=3^n

Which means that

n=3

However, this means that the number of bacteria is 1,350,000 after 3 time intervals; therefore, at the beginning of the 4th interval.

8 0
3 years ago
In three to five sentences, explain the effects of acid rain on the environment
barxatty [35]

Answer:

The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.

Explanation:

5 0
3 years ago
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What happens in meiosis during telophase ll
nignag [31]

- During telophase II, a nuclear membrane forms around each set of chromatids

- The chromatids are again called chromosomes

- The cytoplasm divides through cytokinesis, and four haploid cells form.

7 0
3 years ago
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