Answer:
The correct answer is option d. "All of the above".
Explanation:
A hypothesis is a proposed explanation, based on the evidence that is at hand, for a set of observations and looking for further investigations. A hypothesis in an economic model works under the same premise that a hypothesis in a scientific investigation. The hypothesis may be correct or incorrect, therefore it should be tested before it can accepted only if the results show that the hypothesis explains all the obtained explanations. Regarding economic model hypothesis, usually they deal with causal relationships between an observed phenomena and the origin of it.
Answer: A. true
Explanation: Each crab lives in a different habitat according to the environment in that habitat. If you were to move a Ghost crab to water, where the blue crabs live, it would be easy to see, and would most likely not be able to survive fully submerged in water.
The commonly referred word is a pharynx or "throat"
Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life (because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier).
