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2 years ago

What kind of consumer is a penguin? secondary or tertiary?

Biology

2 answers:

sergey [27]2 years ago

8 0

Answer:

Secondary consumer

Explanation:

It usually consumes fishes, which are primary consumers.

Dafna11 [192]2 years ago

7 0

Answer:

i think they are secondary Consumers. The majority of articles says secondary so yeah

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A piece of metal with a length of 2.83 cm was measured using four different devices. Which of the following measurements is the

Harman [31]

Answer:

The most accurate measurement is 2.829 cm.

Explanation:

We can round the decimals to a certain accuracy in order to make further calculations easier.To round a number to the nearest hundredth ,check the next place value to the right (the thousandths). If it's less than 5, remove all the digits to the right. If the place value is 5 or greater than 5, just add 1 to the previous digit (the hundredths place digit) and drop all other digits to the right.

In other words, to round off a decimal number, the procedure is as follows; if the digit to the right of the required number is a 5 or greater, add 1 to previous digit and drop all the remaining digits. If the required number is less than 5, do not change the previous digit and remove all the remaining digits.

Here, a piece of metal with a length of 2.83 cm was measured using four different devices. The obtained measurements are 2.837 cm, 2.829 cm, 2.812 cm and 2.805 cm.

Thus, the first measurement 2.837 cm can be round off to 2.84 cm. The second measurement 2.829 cm can be round off to 2.83 cm. The third measurement 2.812 cm can be round off to 2.81 cm and the fourth measurement 2.805 cm can be round off to 2.81 cm.

So the most accurate measurement is the second one, 2.829 cm which can be round off to 2.83 cm.

6 0

4 years ago

Which of these was the world’s first artificial satellite?

makkiz [27]

Answer: B Sputnik
Explanation: I hope this helps you

5 0

3 years ago

Read 2 more answers

HELP ASAP

alexandr402 [8]

Answer:

B. Only genetic engineering can produce an organism with desired

traits.

Explanation:

B. Only genetic engineering can produce an organism with desired

traits.

4 0

3 years ago

Read 2 more answers

What kind of energy is formed during photosynthesis?

Simora [160]

Answer:

Explanation:

8 0

3 years ago

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1. What are Chargaff's rules?

kotegsom [21]

1)Chargaff's rules state that DNA from any cell of any organisms should have a 1:1 ratio of pyrimidine and purine bases and, more specifically, that the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine. This pattern is found in both strands of the DNA.

2)DNA structure

DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.

3)A nucleotide consists of three things: A nitrogenous base, which can be either adenine, guanine, cytosine, or thymine (in the case of RNA, thymine is replaced by uracil). A five-carbon sugar, called deoxyribose because it is lacking an oxygen group on one of its carbons. One or more phosphate groups.

4)DNA replication is said to be semi-conservative because of this process of replication, where the resulting double helix is composed of both an old strand and a new strand. ... Semiconservative replication would produce two copies that each contained one of the original strands and one new strand.

5)The diagram has show in above.

6)complementary base pairing is necessary because the double helix shape would not be the same if not. Doubles would only pair with doubles and the singles to singles.

HOPE THIS HELPS YOU.

7 0

3 years ago