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What do the 8 rays of the sun in the Philippine flag symbolize?
Manila, Cavite, Bulacan, Pampanga, Nueva Ecija, Tarlac, Laguna, and Batangas
When and what was the first lunar landing mission?
The first lunar landing mission, Apollo 11, occurred on July 20, 1969.
Who was the second president of the Philippines?
Manuel L. Quezon, succeeding Emilio Aguinaldo
Who composed the Philippine National Anthem, and when?
Juan Felipe composed the anthem Lupang Hinirang in 1898, adapting lyrics from José Palma’s poem Filipinas.
What is the speed of light?
299,792,458 m/s
How long does it take for light to reach Earth?
Approximately 8 minutes
What are autotrophs?
Living organisms that use sunlight, chlorophyll, water, and carbon dioxide to produce food
What is the circulatory system’s primary function?
It serves as the body's lifeline and a system for pickup and delivery
What do arteries do?
They carry oxygen-rich blood throughout the body
What are neurons?
Transmitters of messages between the brain and different body parts
What activities does the brainstem control?
Breathing, blood pressure, heart rate, and alertness
What is a food chain?
A sequence of organisms in a community that represents feeding relationships
What is an ecological environment?
A group of interacting plants, animals, and humans in a specific area.
What causes the greenhouse effect?
Excess carbon dioxide trapping heat near Earth's surface
What is the function of the ozone layer?
It absorbs harmful ultraviolet light, protecting the Earth
Why are products with chlorofluorocarbons discouraged?
They contribute to ozone layer depletion
What causes tides?
The Moon's gravitational pull.
What forms volcanic islands?
The collision of two tectonic plates
What is the theory of plate tectonics, and when was it accepted?
It describes the movement of Earth's plates, widely accepted in the 1950s
What is erosion?
The wearing away of rocks by water, wind, or ice
How do hormones work?
By controlling cell chemistry
What is the male sex hormone?
Testosterone
What unit measures the energy in food?
Calorie
What is hydrotropism?
The growth of roots toward water
What does DNA stand for?
Deoxyribonucleic Acid
What happens during photosynthesis?
Plants use sunlight, water, and carbon dioxide to create oxygen and energy as sugar
What is mitosis?
A cellular process where chromosomes replicate, producing two identical nuclei for cell division
What is heredity?
Biological processes transmitting characteristics from parents to offsprin
What pigment gives plants their green color?
Chlorophyl
What is gravity?
A force pulling two objects toward each other