Answer:
5
Explanation:
The object distance Is 20 I'm
The image distance is 6.666
Therefore the focal length can be calculated as follows
1/f = 1/20 + 1/6.66
= 6.66+20/133.2
= 26.66/133.2
1/f= 26.66/133.2
f = 133.2/26.66
= 4.99
= 5
Hence the focal length is 5
A genetic mutation is a permanent modification in the DNA sequence of a gene to what is found in most people.
Answer:
that would be limestone
Explanation:
Limestone is a carbonate sedimentary rock that is often composed of the skeletal fragments of marine organisms such as coral, foraminifera, and molluscs. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate and is formed by tiny pices of pebbles cemented together.
PLEASE MARK BRAINLIEST
Answer:
DNA and the genetic code reflect the shared ancestry of life.
Explanation:
DNA comparison can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.
Answer:
The answer "to obtain an average that accurately represents fish from this area
" should be the answer because a large sample size is crucial for being a good representation of the whole population, and by taking many samples from each fish scientists can then determine the average mercury concentration within each fish, which then allow them to give a good estimate of the mercury concentration in the fish population because of their sufficient sample size.
Explanation:
