Answer:
Weight of the soil (500g)
Explanation:
According to this question, some students are conducting an experiment in order to find out which of the different soils used absorb heat the fastest. For the first test, they put 500 grams of SAND in a beaker and put a thermometer in the sand.
In an experiment, the variables that must be kept constant for all the groups is called the CONSTANT OR CONTROLLED VARIABLE. This is done in order not to influence the outcome of the experiment. In this case, the weight (500g) of the soil should be kept the same for all other tests.
This means that for the remaining soil being tested, 500g of each type of soil should be used.
Responder:
Hipótesis científica
Explicación:
El procedimiento de representar un fenómeno que no puede explicarse a la luz de la teoría científica actual se llama hipótesis científica.
Generalmente, en el orden de los Métodos Científicos, las observaciones y las preguntas son los primeros pasos. Sin embargo, para proporcionar posibles explicaciones al fenómeno obtenido al hacer preguntas y observaciones, se necesita una suposición o sugerencia. Esta es la suposición científica: para que sea válida, debe ser refutada, basada en la observación cuidadosa del fenómeno.
su esencia es predecir los posibles resultados de un intento de experimentos y después de realizar los experimentos para confirmar si el resultado está de acuerdo con la predicción.
Answer:
Scientific hypothesis
Explanation:
The procedure of representing a phenomenon which can not be explained in the light of the present scientific theory is called scientific hypothesis.
Generally in the order of Scientific Methods observations and asking of questions are the early steps.How ever, to provide possible explanations to the phenomenon by asking questions and observation , a guess or suggestion is needed. This is the scientific guess,For it to be valid,it must be refuted, based on the careful observation of the phenomenon.
its essence is to predict the possible outcomes of an intending experiments and after conducting the experiments to confirm if the outcome agrees with the prediction.
Explanation:
The community may enter primary succession.
Ecological communities are highly dynamic- they gradually evolve. Typically their progression involves:
- colonizing species exploiting uninhabited areas (Primary succession)
- becoming a habitable and increasingly complex community
- there is increased diversity of organisms (Secondary)
The makeup of biological communities is crucial to defining Primary and Secondary succession; eventually, through changes in this makeup, a steady-state or equilibrium is reached called a climax community. While Primary succession starts off with the modification of a previously unoccupied area along with increasing variation; secondary succession begins after major disruption in the community such as fires, storms and flooding.
Like the harvested climax forest, secondary communities do not begin with the removal of soil and all biological life; other species, may be more suited to the altered conditions and begin to modify the area creating a new community.
However, the process of becoming a climax community can be pretty complicated- it is very dependent on other factors like temperature and rainfall. Communities that experience rapid change, frequent major disruptions and even human intervention, are less likely to attain a stable equilibrium and may never become climax communities.
Learn more about primary succession at brainly.com/question/1603854
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