Archive day

November 28, 2025

238 public questions were asked on this day.

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These cliffs found off the coast of Ireland were formed from limestone deposits, as the Earth's sea level rose and dropped over millions of years. The limestone layers became cliffs when they were pushed up by Responses...
Asked by Blaine 1 answer
Insects are responsible for the destruction of a significant percentage of potential food harvests every year. Please select the best answer from the choices provided True or false
Asked by Bob 1 answer
Environmental manipulation can result in unforeseen consequences. Please select the best answer from the choices provided True or false
Asked by Bob 1 answer
National parks reduce the human impact on land by _______. a. permitting limited human development. b. cleaning up litter c. preventing human development d. preventing companies from polluting on public lands Please sele...
Asked by Bob 1 answer
How might environmental manipulation of a crop have unexpected consequences? a. The new crop may require more water than the original. b. The crop may harm the environment. c. The yield may be reduced. d. All of the abov...
Asked by Bob 1 answer
Which of the following best explains why clear-cutting forests is more destructive than selectively cutting down trees in forests? a. Clear-cutting eliminates all trees leaving none behind to maintain soil fertility or h...
Asked by Bob 1 answer
Biological pest control involves _______. a. eliminating pests with pesticides b. using biological mechanisms to eliminate pests c. planting a new crop every year d. burning crops Please select the best answer from the c...
Asked by Bob 1 answer
Look at the diagram showing the different wavelengths in sunlight. A diagram showing the human eye and visible light. Visible light is broken down by color with wavelength in nanometers. Red is 700, orange is 600, yellow...
Asked by Bob 1 answer
Which of the following is not true concerning the Pleistocene ice age? a. Earth began warming out of the ice age 18,000 years ago. b. Glaciers stopped advancing 15,000 years ago. c. Sea levels during the ice age were hig...
Asked by Bob 1 answer
Without the greenhouse effect the Earth would be _______ than it is today. a. warmer b. drier c. colder d. wetter Please select the best answer from the choices provided A B C D
Asked by Bob 1 answer
The increased ranges of plant and insect species resulting from climate change has only negative consequences. Please select the best answer from the choices provided T
Asked by Bob 1 answer
During the entire month of June, temperatures increase in the Northern Hemisphere and decrease in the Southern Hemisphere. What causes these temperature changes? The Sun reaches its lowest point in the sky. The Sun reach...
Asked by Bob 1 answer
Which statement describes the impact of ocean currents on climate? Ocean currents create changes in the temperature of air over land masses. Ocean currents cause the temperature of air over large bodies of water to chang...
Asked by Bob 1 answer
Which action causes breakers? Waves hit the shore at an angle and transport sand. Water flows away from the shore and moves sand with it. Underwater earthquakes cause motion throughout ocean water. Waves meet the shore a...
Asked by Bob 1 answer
Which event typically causes upwelling? Wind blows warm water away from the shore. Warm water rises to the surface of the ocean. Neap tides move cold water away from the shore. Cold water falls to the bottom of the ocean...
Asked by Bob 1 answer
Habitat change occurs more frequently through natural causes than human activity. Please select the best answer from the choices provided True or false
Asked by Bob 1 answer
Which of the following is the most likely cause for global climate change? a. a decrease in the overall temperature of the Earth b. an increase in the overall temperature of the Earth c. an increase in the number of cold...
Asked by Bob 1 answer
Ecosystems have trouble adjusting to short-term changes. Please select the best answer from the choices provided True or false
Asked by Bob 1 answer
With a limited amount of land and an increasing human population to feed from this land, each human's piece of land to produce their food is becoming smaller and smaller. Protecting the land is very important and can be...
Asked by Blaine 1 answer
topsoil contamination species eradication ground water contamination Three examples are provided. A serious environmental problem is the destruction of Responses A farms.farms. B grassland.grassland. C human housing.huma...
Asked by Blaine 1 answer
The _______ is responsible for absorbing the most UV radiation. a. troposphere b. stratosphere c. mesosphere d. thermosphere Please select the best answer from the choices provided A B C D
Asked by Bob 1 answer
What occurs when the Northern Hemisphere experiences spring and the Southern Hemisphere experiences fall? The Sun is directly overhead in the Northern Hemisphere. The Southern Hemisphere receives more direct rays from th...
Asked by Bob 1 answer
Why does a coastal area have less variation in temperature than a noncoastal area? Temperatures feel cool all year round due to the duration of daylight. Temperatures change from warm to cool depending on the season. The...
Asked by Bob 1 answer
Changing a river into a lake is basically what a large dam does. One reason we do this to create reservoirs of fresh water. However, dams change the local ecosystem in a big way. What is one negative impact of building a...
Asked by Blaine 1 answer
Why was the concern over global cooling replaced with a concern over global warming? a. The science community needed a cause to frighten the general population. b. Steady surface temperature increases were noted between...
Asked by Bob 1 answer