A. though conservation
C. through ecological restoration
D. by working toward sustainability to maintain diversity
Explanation:
The ecosystem is made up of the interaction between organisms and their immediate environments.
Humans acts as custodians of the ecosystem in a number of ways:
- through conservation: conservation is the process by which a resource is preserved. With increasing knowledge and better understanding of the ecosystem, humans have been able to conserve quite a number of key component of the ecosystem in several places on earth.
- through ecological restoration: in places that have lost their ecosystem productivity potential, humans have aided their restoration. An example is an abandoned mine converted to a resort.
- Humans are always constantly working towards sustainability to maintain diversity.
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Explanation: Electron shielding could be defined as the reduction or mitigation in the effective cloud due to the differences in the attractive force of the nucleus on the electrons of an atom. Electron shielding explains the protection from attractive forces afforded to the outer electrons by their inner compatriot.
In Nitrogen, there are 3 2p electrons in the 2p sub-level which are shielded by 4 inner electrons; 2 in the 1s level and 2 in the 2s level. Therefore, the electrons in the 2p sub-level enjoy the greatest shielding from the attractive force of the nucleus due to the shield afforded to the valence electrons by the 4 inner electrons .
Answer:
The mass percentage is 3.26 %.
Explanation:
The reaction between acetic acid and NaOH will be:
Thus one mole of acetic acid will react with one mole of NaOH.
The moles of NaOH used = molarity X volume = 0.1 X 30.10 mL = 3.010 mmol
The moles of acetic acid reacted = 3.010 mmol
The moles of acetic acid will be used to calculate the mass of acetic acid used
Mass of acetic acid used = moles X molar mass = 3.010mmol X 60
mass of acetic acid used = 180.6 mg = 0.1806 g
The mass of vinegar used = 5.54 g
The percentage of acetic acid in vinegar will be =%
Answer: These results show that the body regulates its salt and water balance not only by releasing excess sodium in urine, but by actively retaining or releasing water in urine.
Explanation: