<span>Chloroplast is found only in plant cells.</span>
Answer:
Only one chromosome from each pair randomly passed to the s*x cells during meiosis and leads to differences between the siblings.
Answer: The NEGATIVE CONTROl is the test tube that is filled with ONLY distilled water.
Explanation:
A negative control of an experiment is carried out alongside the main primary experiment except that the treatment is changed to something that is predicted to have no result. In the negative control, the student does not expect any response. This would help the student compare the result of a new experiment against an already known existing results.
Analysing the experiment carried out by the student, She filled two test tubes with distilled water and placed a piece of Elodea in one of the tubes, leaving the other without a plant. The other test tube that contains only distilled water is the negative control because she wasn't expecting any result from it. It's also served as a control sample to the primary experiment. This is observed as she blew in each tube to add carbon dioxide, which caused the distilled water to become more acidic. This would help the student know that the that experimental results are valid and to ensure that time is saved.
Answer:
the results were published in a peer-reviewed journal.
Explanation:
When the results of any study or a research is published in a well renowned and a peer reviewed journal, then the study is considered to be credible and authentic and is accepted by the intellectual society.
In the context, two young scientists are performing an experiment on the direction finding or the orientation finding abilities of the loggerhead sea turtle which are hatching under the varying magnetic fields.
The finding of these experiment or the result will be considered credible only when the results of the experiment will be published in a peer reviewed journal.
Answer
the food chain the answer has to do with trophic levels as you probably know the organisms as the base of the food chain are photosynthetic plants on land and in the oceans these organisms are called the producers and they get their energy directly from sunlight and inorganic nutrients the organisms that eat the producers are primary consumers they tend to them to be small in size and there are many of the primary consumers RRB waris vegetarians their organisations that that eat the primary consumer or meat eaters coronavirus and are called the secondary consumers that the secondary consumer strength to be a larger and fear in number this continues on all the way up to the top of the food chain about 50 percentage of the energy possibly as much as 90 % of in the food is lost at the at each chapter 1 level when an organism is eaten so it is less efficient to be a higher order consumer that rather than have a primary consumer therefore the energy transfer from one trophic level to the next up the food chain is like a private pyramid wider at the top