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:
D
Explanation:
This may seem difficult to answer at first, cuz A and even B sounds plausible, but the relative direction of where she's drawing the picture is not known. And we know that the sun does not rise and set in the same place everyday. So the best answer would be D
Answer:
The correct answer is statement A.
Explanation:
The procedure of purifying ocean water, that is, the saline water so that it can become suitable for drinking is termed as desalination. Almost 70 percent of the Earth is covered with water and of this only 3 percent is used for drinking purposes. On a huge scale, the process of desalination would require the boiling of water, which would eventually require an enormous amount of energy.
Reverse osmosis and electro-dialysis are the methods used for desalination. However, these procedures are very costly and cannot be performed on a huge level as it can affect the economy of various countries.
Answer:Una célula pasa por cuatro etapas a lo largo de su vida, que son: el nacimiento, el crecimiento, la diferenciación y la reproducción o muerte celular.
El proceso por el cual nace una célula a partir de otra preexistente se denomina división celular. El mecanismo que da origen a un nuevo individuo, en organismos unicelulares, es decir, organismos formados por una sola célula, se produce para aumentar el tamaño de su población, mientras que en organismos pluricelulares, este proceso funciona para aumentar el número de células y el reemplazo de células que se encuentren dañadas o muertas.
El ciclo celular se define como el conjunto de transformaciones que sufren las células para generar dos células hijas.
Este ciclo está formado por tres fases: la interfase, la mitosis y la ciclo
