ENS 100 EXAM WITH ALL CORRECT & 100%
VERIFIED ANSWERS|LATEST UPDATE|ALREADY
GRADED A+
sources ✔Correct Answer-Processes that release CO2 or CH4 to the atmosphere are known as carbon
What is the official geologic time division we are currently living in? ✔Correct Answer-holocene
chemoautotrophs ✔Correct Answer-Bacteria on hydrothermal vents that form the basis of the foodchain are
What are the two biggest reservoirs of carbon on Earth? ✔Correct Answer-rocks and the ocean
If the whole of Earth's history was condensed in a 24 hour time span, when would the oxygenated atmosphere
occur (approximately)? ✔Correct Answer-at about noon
statements about the carbon cycle ✔Correct Answer-Soils can release CO2
When plants decompose, they release CO2
Rocks are a reservoir of Carbon
Eukaryote ✔Correct Answer-A cell that contains a nucleus and membrane bound organelles. Dna is protected
by a nuclear envelope
animals belong to this group
Stromatolites ✔Correct Answer-Oldest known fossils formed from many layers of bacteria and sediment.
The oldest stromatolites date back to the ✔Correct Answer-Archean Eon
Stromatolites were formed by ✔Correct Answer-photosynthetic bacteria
Oceanic foodchains are, on average, ___ than terrestrial foodchains ✔Correct Answer-longer
Highest Net Primary Productivity rates on Earth are found in ✔Correct Answer-the tropics
If there is 50 kg of rabbit in an ecosystem (and assuming this is the only animal at this trophic level), how much
kg of biomass would you expect at the 4th trophic level? ✔Correct Answer-0.5kg
trophic level efficiency ✔Correct Answer-10% efficient between trophic levels (10% of energy is used in the
next level)
Respiration ✔Correct Answer-plants and animals return CO2 to the atmosphere by "breathing" in a process
called
How much percent of Net Primary Productivity do humans use? ✔Correct Answer-20%
In the past decade, volcanoes have contributed the most to the increase in atmospheric CO2. True/False
✔Correct Answer-False
How old is the Earth? ✔Correct Answer-4.6 billion years old
Hadean Eon ✔Correct Answer-The earliest period in Earth's history
4.5 to 4.0 billion years ago
VERIFIED ANSWERS|LATEST UPDATE|ALREADY
GRADED A+
sources ✔Correct Answer-Processes that release CO2 or CH4 to the atmosphere are known as carbon
What is the official geologic time division we are currently living in? ✔Correct Answer-holocene
chemoautotrophs ✔Correct Answer-Bacteria on hydrothermal vents that form the basis of the foodchain are
What are the two biggest reservoirs of carbon on Earth? ✔Correct Answer-rocks and the ocean
If the whole of Earth's history was condensed in a 24 hour time span, when would the oxygenated atmosphere
occur (approximately)? ✔Correct Answer-at about noon
statements about the carbon cycle ✔Correct Answer-Soils can release CO2
When plants decompose, they release CO2
Rocks are a reservoir of Carbon
Eukaryote ✔Correct Answer-A cell that contains a nucleus and membrane bound organelles. Dna is protected
by a nuclear envelope
animals belong to this group
Stromatolites ✔Correct Answer-Oldest known fossils formed from many layers of bacteria and sediment.
The oldest stromatolites date back to the ✔Correct Answer-Archean Eon
Stromatolites were formed by ✔Correct Answer-photosynthetic bacteria
Oceanic foodchains are, on average, ___ than terrestrial foodchains ✔Correct Answer-longer
Highest Net Primary Productivity rates on Earth are found in ✔Correct Answer-the tropics
If there is 50 kg of rabbit in an ecosystem (and assuming this is the only animal at this trophic level), how much
kg of biomass would you expect at the 4th trophic level? ✔Correct Answer-0.5kg
trophic level efficiency ✔Correct Answer-10% efficient between trophic levels (10% of energy is used in the
next level)
Respiration ✔Correct Answer-plants and animals return CO2 to the atmosphere by "breathing" in a process
called
How much percent of Net Primary Productivity do humans use? ✔Correct Answer-20%
In the past decade, volcanoes have contributed the most to the increase in atmospheric CO2. True/False
✔Correct Answer-False
How old is the Earth? ✔Correct Answer-4.6 billion years old
Hadean Eon ✔Correct Answer-The earliest period in Earth's history
4.5 to 4.0 billion years ago
