The Florissant Fossil Beds in Colorado are home to several massive redwood stumps that were
subjected to a special kind of fossilization millions of years ago. What service could these fossilized
stumps most likely provide?(1 point)
Tourism
Lumber
Shelter
Soil Creation
Tourism
Marine Biologist Dr. James Estes researched sea otters and their habitats in the Aleutian Islands of
the North Pacific Ocean. Sea otters feed on animals such as crabs and urchins. Islands with sea
otters contain a lot of kelp, a seaweed that is an important food source for fish and other sea animals.
However, islands without otters had large populations of urchins but no kelp since sea urchins feed on
seaweed. Since sea otters are able to control the population of urchins, this allows for kelp to freely
grow in those areas. Given this information, what term best describes the otter in the Aleutian
Islands ecosystem?(1 point)
Decomposer
Apex Predator
Keystone species
Producer
Keystone species
Your friend John is having trouble with his compost bin. The material in his compost pile doesn't seem
to be decomposing well. You take a sample of the pile and check for the presence of microorganisms
under a microscope. You see that there are indeed microorganisms; however, they don't appear to be
growing very fast. John says that he regularly mixes his compost pile to expose it to oxygen but has
noticed the pile feels cold. What is the most likely explanation for this problem?(1 point)
The compost pile was sufficently moist
The compost pile contained incorrect amounts of "greens" and "browns"
The compost pile contained aerobic bacteria
The compost pile was placed in the sunshine
The compost pile contained incorrect amounts of "greens" and "browns"
"Green" material has high amounts of...(1 point)
Magnesium
Phosphorus
Carbon
Nitrogen
Nitrogen
Some students decide to plant their own garden. They want to eat a more plant-based diet. For meat,
they will buy locally from a butcher. Any remaining pant-based scraps will be composted and used as
fertilizer for their garden. Which part of this plan represents recycling to reduce their waste?
(1 point)
Composting scraps
Planting a garden
Eating a plant-based diet
Buying locally