Archaebacteria and Eubacteria, Protista and fungi
The question shows the results of a gel
electrophoresis, which shows DNA fragments of the victim and two suspects,
suspect 1 and suspect 2. A comparison of the five DNA fragments of the victim,
A to E, reveals that the victim and suspect 1 both have the DNA fragment b.
A
visual comparison of the gel electrophoresis results should reveal that Suspect
1 has a DNA fragment that matches victim DNA fragment B.<span>The visuals can be seen in the attachment.</span>
Answer:
A. 0.0451
Explanation:
To determine the amount of significant figures in numbers in science, it is important to follow specific rules:
- A non-zero digit is significant. For example: 0.0211
- Zeros located between two significant numbers are significant. For example: 56.20006
- Trailing zeros in cases of the presence of a decimal point. For example: 434.9100
<em>Option A</em>. 0.0451 has <u>three significant figures</u>: 4, 5, 1.
<em>Option B</em>. 450 has t<u>wo significant figures</u>: 4, 5.
<em>Option C.</em> 32.10 has <u>four significant figures</u>: 3, 2, 1, 0.
Option D. 370.0 has <u>four significant figures</u>: 3, 7, 0, 0.
Therefore, option A. 0.0451 is the correct answer.
Long line fishing, drift nets, and trawling all produce an insignificant amount of by-catch is a false statement.
Explanation:
Bycatch fishing is "the incidental capture of non-target species” like sharks, dolphins, seabirds, marine turtles and other marine organisms while applying modern fishing gears like long line fishing, drift nets, or trawling.
Although, these inconspicuous modern fishing gears are highly efficient in catching the desired types of target fishes; these also catch significant amount of other marine species which travel along the line as a bycatch.
A huge number of exclusive marine fishes which are mostly under the endangered list and many juvenile fishes are caught as bycatch which are mostly thrown back dead overboard. Further these modern gears also endanger the marine structures like the coral reefs.
Answer:
Option B. compounds
Explanation:
Compound is a type pure substance which is formed when two or more than two elements combine together chemically in a fixed ratio. It is represented by a chemical formula. Chemically combine means the elements present in the compound make bonds in order to hold each other. So they are not separated by physical methods. It is separated from one another by chemical methods.
