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3 years ago

According to some scientists, what resulted from the environmental conditions existing on primitive earth illustrated above?

1 answer:

3 0

Some scientists have presumed that nature of life may exist with the choice dictated by the local environment. The primitive earth illustrated the evolution of the first heterotrophs from aggregates of organic molecules from the development of heterotrophic forms according to the existing environmental conditions.

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An apartment complex has a floor plan with the dimensions shown. To effectively air condition a room, 20BTU's (British Thermal U

marysya [2.9K]

The dimensions of the room is not given. Lets assume a value and calculate BTU accordingly.

Answer and Explanation:

BTU, or British Thermal Unit, is defined as the amount of heat required to raise the temperature of 1 pound of water by 1° F.

In other words,BTU's measures the amount of heat an AC (or any other cooling unit) can remove from a room per hour. Higher the BTU, the more powerful the cooling.

Calculation:

Lets assume that a room is 10 feet wide and 14 feet long.

Step 1

Calculate the size of the room by multiplying the height of the room with its width:

size of the room= 10 × 14

= 140 square feet

Step 2

Then multiply the size of the room that you obtained in step 1 with 20 BTU per square foot, in order to get the minimum BTU's required for AC to cool a room,

140 × 20= 2800

2800 BTU cooling capacity is required.

6 0

3 years ago

Read 2 more answers

The physical manifestation of a genotype, like blue eyes for bb, is an organism's

Marta_Voda [28]

Answer:

phenotype plz mark me brailiest

Explanation:

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3 years ago

What reinforcements could be used to enable your memory better?

hram777 [196]

Answer:

chewing gum

Explanation:

when chewing gum you'll likely think back to the last time you had gum. The trick is to study while chewing gum and, when you chew another piece of gum, you'll remember back to when you had it earlier along with the information that you remembered as you were chewing the gum.

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3 years ago

Recovering the Romanovs <- your second lab link On the lab page, please navigate using the top and bottom modules. For exampl

77julia77 [94]

Answer:

Explanation:

Who were the Romanovs?The Romanovs were high ranking aristocrats in Russia during the sixteenth and seventeenth centuries,The Romanov was the second dynasty to rule Russia, and also the last ruling Russia from 1613 until the Russian Revolution of 1917

2. Who was Anna Anderson?An impostor who claimed to be Grand Duchess Anastasia of Russia

Who did she claim to be? Anna Anderson had claimed to be the missing be the Grand Duchess Anastasia Nikolaevna of Russia(Anastasia Romanov)

What evidence supported this claim? the evidence that supported her claim was that she had the same hair and eye color,the same height, distinctive body markings, and a deformed foot just as the Romanov princess had.

3. What did scientists find in the burial site? The scientist found nine skeletons.

What did they not find?They did not find two of them which was believe to be that of Princess Anastasia and her brother Prince Alexei

4. What did the mitochondrial DNA testing show? DNA testing showed that it certainly was Nicholas, Alexandra and the three children, these was discovered through the bones found in the grave

What do scientists believe happened to Anastasia?Scientist believed that Princess Anastasia along with her brother Prince Alexei were cremated aright after they were being killed

5. Why do you think it took so long for this mystery to be solved? it took so long for this mystery to be solved because the technology available can not be compare to DNA technology because modern technology and advancement had made it more better and convenient .

What factors played a role? DNA technology played a role

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3 years ago

What kind of effect can a chromosomal change can have on an organism?

SOVA2 [1]

Answer:

positive, negative, or no effect

Explanation:

The kind of effect that a chromosomal change can have on an organism is either positive, negative, or no effect.

The 3 main chromosomal disorders seen in humans are :

Down's Syndrome
Klinefelter's Syndrome
Turner's Syndrome

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2 years ago