A change in environment can cause organisms to die if they are unable to adjust to the new conditions. For example, extreme temperature changes, lack of essential resources like food or water, or increased levels of toxins can all lead to mortality if the organism cannot adapt quickly enough. Additionally, changes in habitat due to factors like deforestation or pollution can disrupt ecosystems, leading to a decline in population sizes or even extinction for certain species.
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Those organisms that had variations which caused to survive and be reproductively successful in the changing environment world fulfill the definition of evolution. The change in allele frequency over time in a population of organisms. Perhaps new species would arise from this change and perhaps not. Time and environment would tell.
Climate change can cause various effects. It causes living organisms to move from their natural habitat.
Genetic and morphological variation. Without variation in organisms there would only be the shifts of genetic drift and gene flow in organisms. When organusms are varied then one can be selected from the other by the environment and the organisms ability to reproduce against that environment. Then there is evolution.
If there where no trees in the rainforest's, the nutrient cycle would change rapidly. There would not be as many nutrients. The plants that are in the rainforest's would grow faster, they would also have to adapt to even more rain, as the trees keep some of the rain away from some plants. It would not be as humid there because the understory keeps most of the heat in and under the canopy.
Organisms from earth, cannot live in outer space. They need a stable environment and a place to evolve and reproduce. Outer space, does not have a stable environment it gets hot then cold in a matter of seconds. If you really think about it, what would the organisms eat? There's nothing in outer space that would provide them with food.