Me 1. which of the following is true about ecology?
a. ecology is a philosophy that seeks to limit harm to the natural world.
b. ecology is a practice that emphasizes preservation of life.
c. ecology is an area of study that focuses on interactions in nature.
d. ecology is a strategy for sustainable living. 2. which of the following would be the best way for an ecologist to determine the effects of an industrial waste chemical on the survival of a fish species?
a. conducting experimental work in a lab
b. conducting library research
c. constructing mathematical models on a computer
d. observing the effect of increasing the amount of chemical in nature 3. how are populations, ecosystems, and communities related?
a. a community consists of an ecosystem and its physical environment, and an ecosystem is made up of many different populations of organisms.
b. a population consists of a community of organisms and its physical environment, and a community is made up of many different ecosystems.
c. an ecosystem consists of a community of organisms and its physical environment, and a community is mad up of many different populations of organisms.
d. an ecosystem consists of a population of organisms and its physical environment, and a population is made up of many different communities of organisms. 4. the algae at the beging of the food chain below are algae→zooplankton→small fish→ squid → shark
a. consumers.
b. decomposers.
c. producers.
d. chemotrophs. 5. why are ecological pyramids shaped as pyramids?
a. because there is a large decrease in the amount of energy or biomass as you move from one trophic level up to the next
b. because the movement of energy through the biosphere follows a path similar in shape to a pyramid
c. because decomposers form a wide base of support at the bottom of a food web similar to the base of a pyramid
d. because food webs are usually triangular in shape 6. what is true of matter in ecosystems?
a. the primary productivity of an ecosystem does not depend on the availability of nutrients.
b. living things can recycle elements within an ecosystem as long as decomposers are present.
c. matter flows in a one-way direction with a 10% loss at each move up in trophic level.
d. elements continuously cycle between the physical environment and living organisms. 8. organisms need nutrients in order to
a. utilize hydrogen and oxygen.
b. carry out essential life functions.
c. recycle chemical compouds.
d. carry out nitrogen fixation. 9. a praying mantis catches and eats a moth. which of the following set of terms describes the praying manits?
a. omnivore, heterotroph, producer
b. producer, carnivore, autotroph
c. predator, herbivore, heterotroph
d. consumer, carnivore, predator 10. which of the following has the least opportunity for recovery?
a. a forest burned by fire cause by a lightning strike
b. a forest cut down by a logging company
c. a forest flooded for a week following heavy spring rains
d. a forest decimated by an avalanche 11. which factors provide the basis for the differences observed in the major land biomes on earth?
a. average temperature and average precipitation
b. average windspeed and average oxygen levels
c. average day length and average night length
d. average organic content and average mineral content in soil

1.C) Ecology is an area of study that focuses on interactions in nature.

Explanation:

Ecology is the section of biology which considers the communications between organisms and their surroundings. Objects of study involve cooperations of organisms with each other and with abiotic segments of their habitat. Ecology involves the investigation of plant and animal inhabitants, plant and animal communities and ecosystems.

2.D) Observing the effect of increasing the amount of chemical in nature

Explanation:

Resolution of infection into our natural habitat has concurrently managed to uncertainty, confusion, injury or pain to both the physical ways and living animals occupying the ecosystem. Maybe dangerous substances such as pesticides, heavy metals, paper mill waste, polychlorinated biphenyl and thick oil are usually discharged into the marine ecosystem.

3.C) An ecosystem consists of a community of organisms and its physical environment, and a community is mad up of many different populations of organisms.

Explanation:

Each community depends on its atmosphere. The nonliving, or abiotic, parts of an atmosphere merge with the living, or biotic, things in a society to make up an ecosystem. Abiotic things involve soil, air, temperature, rain, and many more. Abiotic parts involve the quantity of sunlight, soil, and climate. A very big ecosystem could be a biome such as a desert, chapparal, tundra, and savanna. In ecology, a community is described as the groups of various species living close just to cooperate with one another.

4.C) Producers.

Explanation:

Sharks are the first consumer in a food chain that starts with algae. Algae are producers that get their power from the sun. A food web describes relations between all the organisms and their surroundings. The food chain represents who eats that in the natural. Each living thing from one-celled algae to large blue whales requires food to survive. Each food chain is a feasible pathway that power and nutrients can support within the ecosystem.

5.A) Because there is a large decrease in the amount of energy or biomass as you move from one tropic level up to the next

Explanation:

An ecological pyramid also trophic pyramid, Estonian pyramid, energy pyramid, or seldom food pyramid is a graphical description composed to determine the biomass or bio fertility at each trophic level in an assigned ecosystem. Pyramid ecosystem modeling can also be done to confirm the power flow in the trophic levels pyramids of strength is steadily right after energy levels at each trophic level.

6.D) Elements continuously cycle between the physical environment and living organisms.

Explanation:

Any nonliving matter that living things want is termed a nutrient. Carbon and nitrogen are parts of nutrients. Unlike energy, the object is converted into ecosystems. Decomposers deliver nutrients when they cut down dead organisms. When one organism eats a different organism, it takes all of its nutrients. Nutrients can also cycle out of an ecosystem. Falling leaves may be moved out of an ecosystem by a water. Decomposers cut down dead organisms into nutrients and carbon dioxide, which they respire into the air.

8.B) Carry out essential life functions.

Explanation:

They are essential to the lives of people, plants, animals, and all other organisms. Nutrients help cut down food to give organisms potential. The most essential nutrients they require are carbon, hydrogen, and oxygen. Other nutrients required by plants are nitrogen, phosphorous, potassium, calcium, magnesium, and sulfur.

9. D) Consumer, carnivore, predator

Explanation:

Most praying mantis problem websites promoting serving them a collection of live bugs. If correctly considered for, praying mantises can live as pets for over a year. While a praying mantis will attack if irritated, their wounds are not poisonous and are cause little injury to humans.

10. A) A forest burned by fire cause by a lightning strike

Explanation:

A lightning strike or electricity bolt is an electrical release within the environment and an Earth-bound object. They mostly begin in a cumulonimbus cloud and eliminate on the ground, called cloud to ground lightning. Although lightning itself can't hit you, the electricity generated by a lightning strike can move through conductive coverings such as cables and pipes within your home.

11. A) Average temperature and average precipitation

Explanation:

Some people say there are only 5 important types of biomes aquatic, desert, forest, grassland, and tundra. Forests are divided into the rainforest, temperate forest, chaparral, and taiga plains are broken into savanna and warm grasslands, and the marine biome is divided into freshwater and marine.

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