Ecology Questions
Explore questions in the Ecology category that you can ask Spark.E!
What is the amount of energy transferred to each tropic level?
What would an exponential growth graph look like?
What is an example of a Density Dependent Factor?
Order the efficiency of field, greenhouse, and high tunnel systems
How does water get to Aquifer. How does it go back into the clouds.
Explain Integrated Pest Management (IPM) and describe methods used to control plant pests
It took all of human history to reach 1 billion people in 1804 but little more than 150 years to reach 3 billion in 1960. It took only 12 years from 1987 to 1999 to add the sixth billion. Some pertinent questions to ask are: What changes have allowed humans to become such a dominant species on Earth? If the number of humans tripled during the 20th century, will it do so again in the 21st century? If it does, can Earth sustain the entire world population or will we overshoot the environment's c
For most of our history, humans were not very numerous. Studies of hunting and gathering societies suggest that the total world population was probably only a few million people before the invention of agriculture and the domestication of animals around 10,000 years ago. The agricultural revolution produced a larger and more secure food supply and allowed the human population to grow, reaching perhaps 50 million by 5000 B.C. For thousands of years, the number of humans increased very slowly. Hum
1.1 Perspectives on Population Growth
Since the time of the Industrial Revolution, when the world population began growing rapidly, individuals have argued about the causes and consequences of population growth. In 1798, Thomas Malthus (1766 - 1834) proposed that human populations tended to increase at an exponential rate while food production either remained stable or increased only slowly. Eventually, humans would outstrip their food supply and collapse into starvation, crime and misery. In Malthusian terms, human populations st
Thomas Malthus developed his theory about human population growth when understanding of the world technology and society were very much different than they are today. Some believe that we are approaching or may have surpassed Earth's carrying capacity. Joel Cohen, a mathematical biologist at Rockefeller University, reviewed estimates spanning 300 years of thinking about the maximum human population size the planet can hold, converged on a median value of 10-12 billion.
Reasons why fertility rates, death/mortality rates, infant mortality rates, child mortality rates have changed over time
Who uses sunlight in freshwater and upper layers of ocean?
Succession that occurs in areas that previously held life is called _______
Less than ____ of the sun's energy is used by living things
Community interactions such as ________, _________ or forms of _________ can affect an ecosystem
Succession that occurs when elife n=has never existed is called _____
The biosphere extends ____ kilometers above earth and _______ kilometers below the surface of the ocean
_______ is the main energy source for life on earth
Each step in a food web/chain is called a _________