A weightless object will have no mass, regardless of whether it is in free fall or whether it's not in free fall. An object that is only weightless during free fall will, however, have mass when it's not in free fall.
Answer:
1) Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and fossils.
Explanation:
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Answer: B. A property owner clear-cutting all of the trees on his land to sell for timber.
Explanation:
The tragedy of the commons is a problem whereby an individual pursue his or her own personal gain at the expense of the overall well-being of everyone in the society.
In this question, the tragedy of commons will be a property owner clear-cutting all of the trees on his land to sell for timber. Even though the owner makes some income for himself, this act will bring about soil erosion, depletion of resource or flood. He neglected the society in order to satisfy his own needs.
Answer:
There is less biodiversity in the ecosystem.
Explanation:
Since the barren ground doesn't provide suitable living conditions for most of the living organisms, the ones that need the lest resources to survive create the primary succession, usually the mosses and lichens. The organisms of the primary succession provide biomass, so the ground is mixing with it, thus new soil is forming.
I think it’s Commensalism since it is an interaction in which one individual benefits while the other is neither helped nor harmed.