Chromosomes contain DNA molecules highly packaged and wound around histone proteins. Each chromosome has two chromatids joined together at a point called centromere. Crossover is a process that take place during meiosis 1 ( first phase of meiosis), it enhances the exchange of genetic material. During cross over the non-sister chromatids of chromosomes fuse at chiasma where exchange of genetic material takes place.Therefore, it will be correct to say that crossover creates sister chromatids that are different, because non-homologous sister chromosomes have swapped genetic material with one another.
Among these options, the one which is the broadest group used to classify organisms is D. class.
Although it is not the broadest group ever phylum and kingdom are above it), it is the broadest one here.
Of the options listed, we can confirm that the best evidence to support the claim that global warming has a long-term impact on the ecosystem is given by the phrase "Habitat loss would occur, leading to a decline in species diversity".
<h3>How does habitat loss affect ecosystems?</h3>
- Habitat loss can decrease the species diversity in an ecosystem.
- This can have dire consequences.
- One such consequence is the <u>reduction </u>of primary consumers or producers.
- This decrease in food supply can cause the collapse of the food chain and the disappearance of the ecosystem as a whole.
Therefore, given that the increased temperatures will cause habitat loss, this will lead to a sharp decrease in biodiversity, meaning possibly fewer producers or primary consumers to maintain a stable food chain. This can lead to the full collapse of an ecosystem.
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False! Climate change
The Earth used to be way colder than it is today
The biome that has infertile soil, principally oxisols, to which the vegetation <span>has roots systems that capture nutrients from litter decay, is the tropical rainforest.
Soil types are highly variable in the tropics and are the result of a combination of several elements or variables which includes climate, vegetation, topographic position, parent material and also the soil age. Most of the tropical soils are described by leaching and poor nutrients. It also has two classifications: namely the ultisols and oxisols. Ultisols are known as well-weathered, acidic red clays soils. They are deficient primarily in major nutrients such as potassium and calcium. Oxisols are also an acidic type of tropical soil. However, they are well drained compared to the ultisols.
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