Ace prep Exams

x Choose the statement about nitrogen and nitrogen fixation that is FALSE. The roots of certain plants contain microorganisms that absorb nitrogen from the atmosphere and pass it on to animals. When an animal dies, microorganisms convert the nitrogen in its proteins and muscles into a form that plants can eat. Nitrogen makes up about 22% of the atmosphere and is an important biological compound found in DNA. Nitrogen in the atmosphere is not useable, so it needs to be "fixed" to be of ...

Which characteristic is representative of an exponential population growth model? Produces an S-shaped curve Shows the effect of limiting factors Reflects a population's carrying capacity Reflects growth in an ideal situation Reflects growth in an ideal situation Which statement prizes species for their intrinsic value, rather than for their ecosystem services? Bees are valuable because they pollinate many foods that humans eat. This lake should be protected because it attracts thousands...

Choose the true statement about water on Earth. Oceans cover about 70% of the Earth's surface. Which of the following statements about groundwater is NOT true? Roads built by humans enable water to soak into the earth. Which of the following is a reason why dams are built? To generate power Which of the following is a benefit of dams? Reliable water supply Which of the following is an argument for the removal of dams? We must restore water flow to improve animal habitat and promote biodi...

The standard of living in the United States requires five hectares per person, which is equivalent to a little more than __________. a.) five football fields b.) nine football fields c.) three football fields d.) seven football fields b.) nine football fields n the United States, the standard of living requires about five hectares per person. If every person on Earth required five hectares to live, we would need __________ to sustain the current population. a.) five Earths b.) f...

Which statement is true about human population growth? The population was 200 million people for most of history. In 1800, there were one billion people on Earth. The human population doubled between the years 1900 and 1950. World population has experienced continuous growth since 8000 BC. In 1800, there were one billion people on Earth. Select the item below that is abiotic. Fungi Rainfall Trees Algae Rainfall "Threats of an epidemic haunt citizens as the number of unvaccinated chil...

Which of the following is an emergent property at the ecosystem level of organization? a.) The types of ecosystems b.) The differences between organisms within a species c.) The interactions between communities d.) The relative abundance of species SUBMIT MY ANSWER c.) The interactions between communities Which of the following is an emergent property at the population level of organization? a.) The geographical distribution of species in relation to each other b.) The number of c...

Correctly identify what event, agent or process of those given below is responsible for the current atmosphere on Earth of 20% oxygen. Volcanic activity Photosynthesis Ozone layer formation The water cycle Photosynthesis Which of the following statements about continental drift is true? Because of continental drift, the majority of most continents' landmass remains underwater, which has severely limited biodiversity. After the continents were separated, continental drift slowed, until ...

Correctly identify what event, agent or process of those given below is responsible for the current atmosphere on Earth of 20% oxygen. Volcanic activity Photosynthesis Ozone layer formation The water cycle Photosynthesis Which of the following statements about continental drift is true? Because of continental drift, the majority of most continents' landmass remains underwater, which has severely limited biodiversity. After the continents were separated, continental drift slowed, until ...

Correctly identify what event, agent or process of those given below is responsible for the current atmosphere on Earth of 20% oxygen. Volcanic activity Photosynthesis Ozone layer formation The water cycle Photosynthesis Which of the following statements about continental drift is true? Because of continental drift, the majority of most continents' landmass remains underwater, which has severely limited biodiversity. After the continents were separated, continental drift slowed, until ...

Which statement below about Rachel Carson and her contributions to environmental awareness is true? She wrote an important book that closed the gap between biological and social sciences by examining the interactions between all living things. She wrote in 1949 that humans and nature depend on one another and humans are ethically obligated to protect the environment. She died in 1862, but she had great influence shaping the philosophy of modern-day environmentalism with early calls for pr...