b. a wildfire
a mudslide
d. all of the above
Please select the best answer from the choices provided
A habitat change can be caused by introduction of an invasive species, wildlife and mudslides. Therefore, option (d) is correct.
Habitat change can take place naturally through disease, droughts, fire, hurricanes, mudslides, volcanoes, earthquakes, or precipitation, etc.
However, it is commonly induced by human activities like land use change and physical modification of rivers.
Habitats can change over time due to natural and manmade effects. Natural influences involve seasonal changes, drought, flooding, and natural succession. Manmade effects include conversion of land from forests to farms, and pollution.
Habitat destruction through natural processes like volcanism, wildfire, and climate change. Habitat fragmentation of tropical rainforests led to a great loss of amphibian diversity, but at same time the drier climate spurred on a burst of diversity among reptiles.
An invasive species are an introduced organism that gets overpopulated and harms new environment.
Therefore, mudslides, wildlife and invasive species can cause habitat change.
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B. Carbon
C. Methane
D. Water
Carbon is the substance can not be decomposed by a chemical change. Therefore, option B is correct.
A chemical change is the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances. It occurs when one substance reacts with another to form a new substance.
Carbon and water Although carbon dioxide and carbonic acid are simpler compounds, they are still compounds. As a result, they can decompose and leave us with the basic elements' hydrogen, oxygen, and carbon. Compounds degrade due to chemical changes.
Elements are pure substances that cannot be broken down using conventional chemical methods such as heating, electrolysis, or reaction. Elements include gold, carbon, silver, and oxygen.
Thus, option B is correct.
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Answer:
Mg²⁺ cation
Br⁻ anion
Explanation:
Magnesium is present in group two of periodic table.
It is alkaline earth metal.
It has two valance electrons.
Thus by losing two valance electrons it complete the octet. The common oxidation state of magnesium is +2.
The bromine is present in group seventeen.
It has seven valance electrons.
It is the member of halogen family.
To complete the octet bromine required one electron. By gaining the one electron it showed -1 oxidation state.
When bromine combine with magnesium both formed MgBr₂.
The one atom of Mg have +2 oxidation state while bromine have -1 that's why to make the overall compound neutral two bromine atoms combine with one atom of magnesium.
Question 7 options:
Their speeds are the same.
the object with the greater speed has greater kinetic energy
the object greater speed has the lower kinetic energy
the object with the smaller mass has the greater kinetic energy
Answer: Option (B) is the correct answer.
Explanation:
Kinetic energy is the energy due to the motion of an object.
Mathematically, K.E =
where m = mass
v = velocity
Therefore, an object whose velocity is more will have more kinetic energy.
Thus, we can conclude that out of the given options, the object with the greater speed has greater kinetic energy is true about their kinetic energy.