All members of a species that live in the same area at the same time make up a(an)

a. population.

b. species.

c. community.

d. biome.

e. ecosystem.

. Is this an example of an open system or a closed system? Explain your answer.

A change in allele frequencies in a population over a span of generations is __?

Describe a real-world example of a closed system.

What is the building block of each of the four classes of organic molecules?

How does the process of natural selection lead to changes in the phenotypic characteristics of individuals within a population over time?

Which is the most accurate description of an ecosystem?
A. An ecosystem consists of a biological community-the physical and chemical factors-that make up its abiotic environment.
B. An ecosystem consists of the biological community that occurs in some locale
C. An ecosystem consists of the biological community that occurs in some locale and the chemical factors that make up its biotic or abiotic enviorment.

Define matter. What is the law of conservation of matter?

T or F? Kinetic energy is the energy of motion, such as a rock rolling down a hill.

Some scientists argue that living organisms constantly battle against the principles of the second law of thermodynamics using the principles of the first law of thermodynamics. What might they mean by this? Do you think this is accurate? What might be some of the implications of this for living organisms?

State the first law of thermodynamics. What are its implications?

Some autotrophs can derive their energy to fix carbon from inorganic compounds, such as hydrogen sulfide, rather than sunlight. For example, at deep sea hydrothermal vents, bacteria oxidize hydrogen sulfide to produce sugar, sulfur, and water: $\mathrm{CO}_2+4 \mathrm{H}_2 \mathrm{~S}+\mathrm{O}_2 \rightarrow \mathrm{CH}_2 \mathrm{O}+4 \mathrm{~S}+3 \mathrm{H}_2 \mathrm{O}$ :

Suggest why different pathway for fixing carbon dioxide evolved in deep sea vents.

Organisms that grow near deep-sea volcanic vents are likely to be what?

The organisms found near deep sea volcanic vents do not use sunlight to get energy. What are possible energy sources for these organisms?