Answer:
No, it would be a physical change, as the crumpled paper is still paper. There was no chemical reaction. An example of chemical change would be burning paper, as it turns to smoke and ashes.
B. have luster
C. have low melting points ###
D. are malleable
is my answer right?
The differing environmental conditions at different altitudes on a mountain lead plants to develop specific adaptations to those conditions. These adaptations can cause variations in characteristics of plant species across altitudes. Such variations may also signal potential speciation events.
Plants found at different elevations on a mountain differ due to adaptions to varying environmental conditions. The primary differences in environmental conditions can be attributed to three main factors - differences in temperature, light and atmospheric pressure across varying altitudes. As one climbs up a mountain, the temperature typically decreases, light intensity may vary, rainfall patterns may change, and atmospheric pressure decreases.
Plants adapt to these variable conditions in several ways. For instance, high altitude plants might develop adaptations to survive colder temperatures, stronger winds, and more intense UV radiation. They might have smaller leaves to reduce water loss, thicker cuticles to handle UV radiation, and can grow closer to ground to escape wind damage. On the other hand, plants at lower altitudes may have broader leaves to capture more sunlight, deeper roots systems to access water resources, and they can afford to invest more resources in growth, as opposed to survival mechanisms.
Observed differences in plant species across altitudes can also suggest potential speciation events, where the separation of populations by altitude leads to the development of new species over time. A possible way to ascertain this would be to observe whether, when grown in the same environment, high-altitude plants respond to low altitude in the same way that low-altitude plants do, and vice versa. This could indicate whether the observable differences are primarily due to environmental factors or genetic variation.
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Answer: Liquid state
Explanation:
There are three states of matter named as solid , liquid and gas.
Solids have fixed shape and fixed volume as the molecules are strongly bonded to each other.
Liquids have fixed volume but no fixed shape as the molecules are weakly bonded to each other.
Gases have neither fixed shaped nor fixed volume as the molecules are very weakly bonded to each other.
Answer: That's true.
Explanation:
If a single atom of an element in a molecule required a subscript,
then water would be H₂O₁ , and salt would be Na₁Cl₁ .