The answer is; YES
All organisms share one common ancestor in the beginning of life. Different species have branched at different times from common ancestors hence he evolutionary tree looks like tree called a cladogram. The nodes represent the common ancestry while branches depict divergence. Therefore even fruit flies and the fruit bats even though they do not belong to the same species shared a common ancestor at one time in history.
37. Observation and scientific theory are both related. Because it needs hypothesis and experiment to be able to have an actual data to show.
For example:
If you want to know how a monggo seeds grow on a wet cotton. Then you should be preparing the needed things and perform the experiment. You need to observe to be able to get the scientific theory of how this experiment works. That’s how observation and scientific theory is related. They will always be together in science.
Answer:
c. A chromosomal mutation can change the total number of chromosomes in the cell.
Explanation:
A gene mutation affects a single gene, and replication error is the main cause of gene mutation. A chromosomal mutation affects one part of chromosome or full chromosome. error in meiosis is the main cause of chromosomal mutation. Both mutations are responsible for a change in DNA. A chromosomal mutation leads to the change in total number of chromosomes in the cell.
The advantages that are provided to developing rural areas by building and using an anaerobic digester is that anaerobic digesters offer both a source of energy and a sanitary method of waste disposal which can help control disease.
<h3>What is an anaerobic digester? </h3><h3> </h3>
An anaerobic digester is a tank. It's a tank in which the size and appearance change considerably depending on what use is the digester being applied for.
- A variety of anaerobic digesters is the household digester which is used for a single family. It has a volume of less than one cubic metre.
- In an industrial-scale anaerobic digester. The size can easily surpass 5,000 cubic meters.
- A digester used on a farm or a ranch has a typical capacity of a few dozen cubic meters.
Therefore, the advantage is that anaerobic digesters offer both a source of energy and a sanitary method of waste disposal which can help control disease.
Read more about anaerobic digesters, here
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Answer: D. The kinds of organisms that lived there long ago.
Explanation: Finding fossils in an area can help us learn about the kinds of organisms that lived there long ago. The fossil leave traces behind about what type of animal lived there and who the animal was.
