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Questions (15)

Biogeochemical cycles like the carbon cycle help explain that matter can be neither created nor destroyed. What law is this?(1
1. 1 answer
2. 144 views
Rashon is giving a lecture at the local high school. His first slide is about how energy travels through an ecosystem. What is
1. 1 answer
2. 144 views
In the nitrogen cycle, denitrification is the process of breaking down nitrates and nitrites to release N2 back to the air,
1. 1 answer
2. 157 views
In biology class, Kiana is learning about the phospholipid bilayer of the cell membrane. Which of the following BEST describes
1. 1 answer
2. 176 views
What do plants produce as a by-product of photosynthesis?(1 point) Responses A: water and carbonic acid water and carbonic acid
1. 1 answer
2. 99 views
Parrotfish are secondary consumers in some ecosystems. What trophic level do these parrotfish MOST likely belong to?(1 point)
1. 1 answer
2. 227 views
A species of bacteria uses chemosynthesis to produce food while algae use photosynthesis to produce their own food. Both
1. 1 answer
2. 111 views
Phytoplankton (marine algae) obtain their energy from the Sun. What is their place in the food web?(1 point) Responses A: second
1. 1 answer
2. 173 views
In order for humans to live on Mars, they would need to develop methods for getting air, water, and food. What type of system
1. 1 answer
2. 125 views
A pufferfish, a secondary consumer, is swimming along in a coral reef when it suddenly encounters a reef shark. If the shark
1. 1 answer
2. 207 views
Lisa picks an orange off a tree and eats it. Which of the following BEST describes this transfer of energy?(1 point) Responses
1. 1 answer
2. 139 views
As humans, we require energy to build molecules, transport materials, and contract our muscles. Which of the following explains
1. 1 answer
2. 186 views
Which of the following BEST describes energy flow on Earth?(1 point) Responses A: Earth is a closed system; only energy is
1. 1 answer
2. 117 views
Luka is heating up a pot of water on a gas stove. Which of the following BEST describes the energy in this system?(1 point)
1. 1 answer
2. 161 views
Luka is heating up a pot of water on a gas stove. Which of the following BEST describes the energy in this system?(1 point)
1. 1 answer
2. 193 views

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