Background: Ecology is the study of ecosystems. An ecosystem consists of all the living and nonliving components of the habitat. Whereas nutrients and certain elements are recycled through ecosystems, energy moves in just one direction. Many interactions among species within an ecosystem are centered around the flow of energy. The formation of ecosystems, from new land to current habitats, is usually based on the pioneer species, and these species are able to live in an area due to the nonliving factors, such as the climate, the soil and the amount of rainfall, of that area. The populations within an ecosystem also determine the stability of the system. Recent tremendous increases in the human population have raised many important ecological issues.

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read more about  the study of ecosystems?
Answer: Rick

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read less about the study of ecosystems?
Answer: Tom

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read less about living components of the habitat?
Answer: Tom

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read more about living components of the habitat?
Answer: Rick

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read more about nonliving components of the habitat?
Answer: Rick

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read less about nonliving components of the habitat?
Answer: Tom

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read less about the many interactions among species within an ecosystem?
Answer: Tom

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read more about the many interactions among species within an ecosystem?
Answer: Rick

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read more about the flow of energy?
Answer: Rick

Situation: Two friends were into natural sciences. Tom was more into Geology, while Rick studied Ecology.

Question: Which student read less about the flow of energy?
Answer: Tom

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied more ecosystems?
Answer: Ben

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied fewer ecosystems?
Answer: Dan

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied fewer nonliving components of the habitat?
Answer: Dan

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied more nonliving components of the habitat?
Answer: Ben

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied more living components of the habitat?
Answer: Ben

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied fewer living components of the habitat?
Answer: Dan

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied fewer nutrients and certain elements?
Answer: Dan

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied more nutrients and certain elements?
Answer: Ben

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied the flow of energy more?
Answer: Ben

Situation: Two brothers liked natural sciences. Ben decided to study Ecology, while his brother Dan decided to study Geography. They studied a lot and became very good at these subjects.

Question: Which brother studied the flow of energy less?
Answer: Dan

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island was more favorable for pioneer plants?
Answer: New island

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island was less favorable for pioneer plants?
Answer: Old

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a more favorable climate for new ecosystems?
Answer: New

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a less favorable climate for new ecosystems?
Answer: Old

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a less favorable soil for new ecosystems?
Answer: Old

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a more favorable soil for new ecosystems?
Answer: New

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a more favorable amount of rainfall for new ecosystems?
Answer: New

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a less favorable amount of rainfall for new ecosystems?
Answer: Old

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a more stable ecosystem factoring in the population?
Answer: New

Situation: Scientists studied two island. One with an old ecosystem named Old island, and the other with a newly formed and forming ecosystem named New island. Both islands were inhabited, Old island being heavily inhabited.

Question: Which island had a less stable ecosystem factoring in the population?
Answer: Old