Answer:
Only options A (first one) reflects the instances with valid experiment or conclusion.
Quality of any experiment depends upon two things reliability and validity. Reliability is measure of regeneration of results every time an experiment is performed under specific conditions.
Validity is measure of accuracy of results of an experiment. It can be check by two ways: internal validity (checks the design of the experiment) and external validity (checks if the conclusion is the real explanation of the phenomenon).
Now, in marine biologist experiment, he concluded the results only after one breeding season. This makes his results unreliable as it might have happened by chance.
Similarly, in cola experiment the taste was only checked by one candidate i.e. Karl. He might have problem in his taste buds. In addition, the temperature of cola can also affects its taste which is not taken care of in the experiment. Hence, it is not the valid experiment.
Similarly. Jeanette could use more plants for her experiment and Robert just followed only one instruction. He didn't perform any experiment.
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* BRAINLIEST WOULD BE V APRECIATED :) </h2>
Answer:
im pretty sure its the 3rd one
Explanation:
<u>1</u><u>.</u><u>Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.</u>
<u>2</u><u>.</u><u> </u><u>Bacteria evolve quickly because they grow fast and can share genes. Helpful mutations spread quickly in bacteria.</u>
<u>3</u><u>.</u><u>Taking antibiotics too often or for the wrong reasons can change bacteria so much that antibiotics don't work against them. This is called bacterial resistance or antibiotic resistance</u>
<u>4</u><u>.</u><u> </u><u>Antibiotic resistance leads to higher medical costs, prolonged hospital stays, and increased mortality. The world urgently needs to change the way it prescribes and uses antibiotics.</u>
<u>I</u><u> </u><u>think</u><u> </u><u>so</u><u> </u>
It could be a yes or no... to me because you try something you did try an put your work in to it when it was hard work.... I agree because you always try when you do something... if it can't be proven at least you tried on it
90% of people weigh more than Nikoleta and 10% weigh less.
