Ecosystem is the population of all species that occupy a habitat.

Eutrophication is a process by which a body of water becomes deficient

with nutrients.

DNA in prokaryotic cells are found in its nucleus.

Variation in a population is called genetic diversity.

Ecosystems do not have clear boundaries and are not isolated from one

another.

Atoms are the basic unit of life.

Cells arise only by division of previously existing cell.

The biosphere consists of the parts of the earth’s air, water, soil

where life is found.

Variation in a population is called genetic diversity.

Arrange the internal structure of the Earth from outer surface to inner surface:

I. Lower mantle

IV. Crust

II. Outer core

V. Upper mantle

III. Inner core

It extends only about 17 kilometers (11 miles) above sea level at the tropics and

about 7 kilometers (4 miles) above the earth’s north and south poles.

Which of the following gases are included in greenhouse gas.

Also called Earth's sunscreen

Consists of the earth’s intensely hot core, a thick mantle composed mostly of rock,

and a thin outer crust.

What is the goal of ecology?

Producers, consumers, and decomposers use the chemical energy stored in

glucose and other organic compounds to fuel their life processes.

All consumers are directly or indirectly dependent on producers for their

food or nutrients.

The ability of an organism to convert converts inorganic compound from

their environment into more complex nutrient compounds without using sunlight

is called photosynthesis.

The reaction during photosynthesis can be summarize in this formula.

carbon dioxide + water + solar energy -> glucose + carbon

Consumers are sometimes called autotrophs.

Too much of an abiotic factor can be limiting for an ecosystem.

Too much or too little of any abiotic factor can limit or prevent growth of a

population, even if all other factors are at or near the optimal range of tolerance.

Potentiality of organisms to survive is called principle of sustainability.

Abiotic factor consists of nonliving components such as water, air,

nutrients, rocks, heat, and solar energy.

All organisms get their energy from aerobic or anaerobic respiration but

only plants carry out photosynthesis.

The development of modern technology in the health sector and the discovery

of new vaccines made the death rate grew fast.

Agricultural revolution made a great change to decrease the human

population.

Density refers to the number of animals per unit area.

Empowering woman can help to slow down the growing rate of population.

Death caused by car accident is an example of density-independent factor.

Animals that are in poor nutritional condition have fewer young and/or breed

less often.

Population growth rate tend to slowdown when the country is more developed.

Family planning is illegal in the Philippines because Christianity is the

predominant faith in the country.

A 35 years old male was infected by covid-19 virus, he was advised to do a self-

quarantine since it is not severe. After 3 days, the 35 years old male died due to

the infection. This scenario is an example of density-independent factor of

mortality.

Fecundity means the ability to produce offspring.

Maximum number of births produced per individual under ideal conditions of

environment.

It refers to the death of individuals of a population under existing

environmental condition.

Density per unit of habitable space.

A pattern of population change where the population remains static over the

years.