The correct sequence of events is : C,D,B,A.
Iron rich magma in the earth's core heats up because of radiation and the pressure exerted by the other layers of the earth. This heat in the crust trigger convection currents in the mantle. The magma closest to the core will be hotter and therefore less dense than other layers. Being less dense the layer will rise towards the crust, eventually becoming cooler and sinking back down in a circular motion.
The continued circular motion creates electric currents which then generates the magnetic field.
Answer:
The allele frequency changed
The light moths blended in with the light-colored trees. However, the Industrial Revolution changed the tree colors. After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form.
Answer:
The right matching of the scenario in the question are as follows:
1. OBSERVATION: Josh noticed that Julie ordered extra hot peppers and added hot sauce to her food
2. QUESTION: Josh wondered how to cook spicy Mexican food.
3. HYPOTHESIS: Josh decided jalapenos would be a good ingredient to add spice to the recipe.
4. EXPERIMENT: After chopping the jalapenos, he slowly added some to the enchilada filling, tasting as he went until he thought it was spicy enough.
5. RESULTS: Julie thought the enchiladas were delicious and exactly the right level of spice.
6. CONCLUSION: Josh determined that since Julie liked the meal, adding jalapenos to the recipe was a good way to make it spicy.
Explanation:
Scientific method is an organized steps of procedures that scientists used to study and gather knowledge about different phenomenons. The systematic steps of scientific method start with observation, the observed phenomenon usually make a scientist to ask questions that he doesn't have an answer to. This will prompt him to formulate an hypothesis and set up an experiment to see if his hypothesis is true or not. The result he obtains from the experiment will determine the type of conclusion he will make about his earlier observation. By following these steps, scientists usually obtain useful information that bring progress and advancement to humanity.
Answer:
here are some:
1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods. One of the first principles of free markets is that for them to work effec- tively, the full costs of an activity must be borne by the involved parties.
Explanation:
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