Which of the following is the primary source of freshwater in the Philippines?

What is the main cause of water pollution in our country?

Eutrophication means

Main source of water pollution during typhoons and heavy rainfalls.

Main water pollutant from mining industry?

True about coliform bacteria

Government agency responsible for the management and protection of water resources in the Philippines.

The major river system in the Philippines

Water quality indicator which measures the amount of dissolved oxygen consumed by microorganisms to decompose organic waste.

Which of the following is responsible for an increase in population density?

A group of populations of two or more species occupying the same geographic area at the same time is called

Changes in the population may occur when a group moves into a population. This is called

Which among the following options fall under the category of pre-reproductive

What is the population having a large number of individuals in pre-reproductive

A population is a group of organisms of the same species

Human population growth curve is a:

The size of the population is represented by the property called density

Name the term which defines the study of the characteristics and parameters of the population

Which of the following term defines the ability of the individual in the population to produce new individuals?

______is defined as the totality of organisms of the same species observed in a specific geographical region at a particular time.

______is the process by which large numbers of people become permanently concentrated in relatively small areas, forming cities.

The power of Population Growth is greater than the Power of Earth for subsistence.

refers to the number of individuals in a population

in a certain area can grow or decline through the interplay of three factors: births, death and migration.

Refers to the permanent change of residence of a person or a group

movement of people out of the country

movement of people into a country

A relative number of males and females in a population

Refers to the number of individuals of each age in a population

_____ has a constant birth rate, and organisms are not limited by food or diseases

the growth rate decreases as resources deplete.

Studies on western European countries shows that when countries become industrialized and economically developed, poverty decreases, their population tend to grow more slowly.

when are educated, earn income of their own, and control their own fertility, they tend to have fewer children.

Family planning program provide education and clinical services. Couples can plan and choose how many children to have. The Department of Health (DOH) provide free consultation in health centers.

A type of symbiosis where orchids live in a tree

Most diverse terrestrial biome, many staple food and medicine are derived from this

If we completely remove the decomposers from an ecosystem, their functioning will be adversely affected because

Which one of the following animals may occupy more than one trophic level in the same ecosystem at the same time?

Which one of the following is a primary consumer in the maize field ecosystem?

Who proposed the term ecosystem?

Name the organisms that manufacture organic compounds from simple inorganic compounds without using sunlight?

What are the two basic categories of an ecosystem?

What is the characteristic of each type of ecosystem?

In which of the following aspect do the components of the ecosystem are seen to function as a unit?

all living things that affect an organism.

non-living are the physical and chemical characteristics of an environment

(producer) where they can make their food

(consumer) that depend on other organisms as their source of food

_____ are heterotrophs that feed on only plants

Heterotrophs that eats only meat

____are heterotrophs that feed on both plants and animals

_____are heterotrophs that feed on animals that have already died

break down the complex compounds of dead and decaying plants and animals into simpler molecules that can be more easily absorbed

is a symbiotic relationship in which both species benefit

is a symbiotic relationship in which one species benefits and the other species is neither harmed nor benefited.

is a symbiotic relationship in which a member of one species derives benefit at the expense of another species (the host)