Archive day

March 12, 2026

1,851 public questions were asked on this day.

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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 location of matter...
Asked by kendall whipple 1 answer
The process of photosynthesis converts carbon atoms from carbon dioxide into _______. A. salts B. oxygen C. sugars D. hydrogen
Asked by jacob 1 answer
Read the excerpt from Twelfth Night, by William Shakespeare. If music be the food of love, play on; Give me excess of it, that, surfeiting, The appetite may sicken, and so die. That strain again! it had a dying fall: O,...
Asked by jo 1 answer
Which best describes energy changes in a system?(3 points) Energy is conserved, but it can be created or destroyed. Energy is conserved, and it cannot be created or destroyed. Energy is not conserved, and it can be creat...
Asked by Sigma 1 answer
The conditions were so new to them that it was a relief to meet persons who had seen such things before. We were asked not only to act with them, but to assume charge of the administration of relief. This, of course, we...
Asked by k. 1 answer
The carbon that plants need for photosynthesis comes from A. carbon atoms from the breakdown of food. B. carbon molecules that the plant produces. C. carbon molecules dissolved in water. D. carbon dioxide gas in the atmo...
Asked by jacob 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. respiration of plants and animals B. combustion of...
Asked by kendall whipple 1 answer
Through the process of photosynthesis, light energy from the Sun was transformed into chemical energy in the form of sugar within a strawberry plant. The strawberries were then eaten by a bird, and the sugars were conver...
Asked by jacob 1 answer
Two objects are sitting on a table. Thermal energy is being transferred from one object to another. When does this transfer of thermal energy stop?(3 points) when the two objects are different temperatures when one objec...
Asked by Sigma 1 answer
Which of the following correctly describes the relationship of different organisms in an ecosystem? A. All animals consume plants as their only energy source. B. Plants and animals both receive energy from the Sun that t...
Asked by jacob 1 answer
Katie places two metal cubes in contact with each other. Energy and heat flow from Cube A to Cube B. What conclusion can be drawn regarding Cube A?(3 points) It is cooler than Cube B. It is smaller than Cube B. It is war...
Asked by Sigma 1 answer
Examine the diagram of the carbon cycle shown above. Through which of the following processes is carbon returned to the atmosphere? photosynthesis respiration decomposition of organic waste burning of fossil fuels
Asked by jacob 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 jacob 1 answer
The first step of a certain job application process is an exam. The exam is worth 100 points. The scores on the exam were normally distributed, with a mean score of 76 points and a standard deviation of 4.2 points. Last...
Asked by hey 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. oxygen C. water D. all of these
Asked by jacob 1 answer
What is the main type of energy conversion taking place? (3 points) Chemical energy is converted to mechanical energy as the energy from digested food provides energy for movement. Mechanical energy is converted to therm...
Asked by Sigma 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 jacob 1 answer
A solid object at 30°C is placed inside a container of liquid at 60°C. What most likely will be observed? (3 points) The temperature of the solid object will increase. The temperature of the solid object will decrease. T...
Asked by Sigma 1 answer
hy are most oven mitts made out of cloth? (4 points) Cloth is the only material available to make oven mitts. Cloth is an insulator and cannot conduct heat. Cloth cools a pan down as soon as it is touched. Cloth is a con...
Asked by Sigma 1 answer
How does energy usually flow in ecosystems? A. from the Sun through consumers to producers B. from producers through the Sun to consumers C. from consumers through the Sun to producers D. from the Sun through producers t...
Asked by jacob 1 answer
Which of the following is an example of thermal energy being transferred directly from one substance to another via conduction?(3 points) a pan heating on the stove water vapor escaping from a pot of boiling water the Su...
Asked by Sigma 1 answer
When Ben holds an ice cube in his hand, which transfer of energy is taking place? (4 points) Heat is flowing from his hand to the ice cube. No transfer of energy is taking place. Both heat and coldness are being transfer...
Asked by Sigma 1 answer
1. Besides a magnet, what can create a magnetic field? 2.How is the magnetic field of an electromagnet controlled? 3.How are solenoids and electromagnets used in galvanometers, electric motors, and loudspeakers? 4.How do...
Asked by k. 1 answer
The Universities of Alabama and Mississippi were able to integrate because their governors decided to accept it. civil rights activists led nonviolent protests. the federal government became involved. the state governmen...
Asked by :) 1 answer
Examine the diagram of the carbon cycle shown above. Through which of the following processes is carbon removed from the atmosphere? respiration burning of fossil fuels photosynthesis decomposition of organic waste
Asked by jacob 1 answer