Archive day

March 12, 2026

1,851 public questions were asked on this day.

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The diagram below represents part of the oxygen cycle. Which biological process is represented by arrows 1 and 3? A. respiration B. adaptation C. osmosis D. photosynthesis
Asked by jayden 1 answer
The process of photosynthesis converts carbon atoms from carbon dioxide into _______. A. sugars B. salts C. hydrogen D. oxygen
Asked by jayden 1 answer
The diagram below represents part of the oxygen cycle. Which arrow, or series of arrows, represents the movement of atmospheric oxygen (O2) during respiration? A. only arrow 6 B. only arrows 1 and 6 C. only arrow 2 D. on...
Asked by jayden 1 answer
In ecosystems, plants transform light energy from the Sun into chemical energy when they make sugar. This sugar can then be consumed by other organisms to be used as building blocks for other molecules, such as proteins...
Asked by jayden 1 answer
The diagram below summarizes the Earth's carbon cycle. Examine the diagram, and answer the question that follows. Carbon is returned to the atmosphere through _______. A. respiration of plants and animals B. dissolution...
Asked by jayden 1 answer
20 In the above food web, energy is transferred from wheat to the mouse and from the mouse to the coyote when these organisms are consumed. How does this example support the law of conservation of energy? A. Energy is ne...
Asked by jayden 1 answer
A diagram of the carbon-oxygen cycle is shown below. Which of these best describes the role of plants in the carbon-oxygen cycle? A. to absorb oxygen from the soil and use it to make carbon dioxide for sugar production B...
Asked by jayden 1 answer
The overall flow of energy through an ecosystem is from A. herbivores to photosynthetic organisms to carnivores and decomposers. B. carnivores to photosynthetic organisms to herbivores and decomposers. C. decomposers to...
Asked by jayden 1 answer
A diagram of the carbon-oxygen cycle is shown below. Which of the following is mainly responsible for the removal of carbon dioxide from the atmosphere? A. soil B. plants C. animals D. factories
Asked by jayden 1 answer
Select each correct answer. More than one answer may be correct. Examine the diagram below. Which of the following is a source of carbon dioxide in the atmosphere? animals factories sunlight plants
Asked by jayden 1 answer
The diagram below summarizes the Earth's carbon cycle. Examine the diagram, and answer the question that follows. Carbon is taken from the atmosphere through _______. A. volcanic activity B. respiration of plants and ani...
Asked by jayden 1 answer
13 Humpback whales mainly feed on krill, or shrimp-like crustaceans that live in the ocean. When humpback whales feed, they swim upwards with their mouths wide open and swallow thousands of krill all at once. The excess...
Asked by jayden 1 answer
Select each correct answer. Examine the diagram of the carbon cycle shown above. Through which of the following processes is carbon returned to the atmosphere? decomposition of organic waste photosynthesis respiration bu...
Asked by jayden 1 answer
An ecosystem is shown in the picture below. In an ecosystem, materials can be recycled. Which of the following materials can cycle through this ecosystem? A. carbon B. water C. oxygen D. all of these
Asked by jayden 1 answer
What is the primary function of decomposers in an ecosystem? A. Decomposers are parasites; they attach themselves to host organisms and absorb nutrients from the host until the host organism dies. B. Decomposers combine...
Asked by jayden 1 answer
Phytoplankton are single-celled, photosynthetic organisms living at the surface of the ocean. How do phytoplankton affect the Earth's carbon and oxygen cycles when they perform photosynthesis? A. They add both carbon dio...
Asked by jayden 1 answer
Which of the following correctly describes the relationship of different organisms in an ecosystem? A. Some animals receive energy from plants, while others receive energy from other animals. B. All animals consume plant...
Asked by jayden 1 answer
The amount of matter in the Earth system remains constant over time. The forms and locations of the matter stored within the system, however, change continually as it cycles through the Earth. Matter can be transferred b...
Asked by jayden 1 answer
The diagram below shows the flow of nutrients and materials in a prairie ecosystem. If the ecosystem is a closed system, which of these things does not change as it cycles through the ecosystem? A. the form of matter B....
Asked by jayden 1 answer
Select each correct answer. More than one answer may be correct. Examine the diagram of the carbon cycle shown above. Through which of the following processes is carbon removed from the atmosphere? decomposition of organ...
Asked by jayden 1 answer
The carbon that plants need for photosynthesis comes from A. carbon dioxide gas in the atmosphere. B. carbon molecules dissolved in water. C. carbon molecules that the plant produces. D. carbon atoms from the breakdown o...
Asked by jayden 1 answer
choose one real location whwre plate tectonics are ativitely shaping
Asked by dom 1 answer
The diagram below shows the flow of nutrients and matter in a prairie ecosystem. When a garter snake consumes a mouse, what happens to the organic matter that made up the mouse's body? A. It changes form. B. It leaves th...
Asked by jayden 1 answer
The diagram below represents part of the oxygen cycle. Which two major biological processes involved in the oxygen cycle are represented in the diagram? A. respiration and precipitation B. evaporation and precipitation C...
Asked by jayden 1 answer
how are ocean trenches formed
Asked by dom 1 answer