Are You A Science Freak?

Explanation
Black absorbs more heat because it absorbs all wavelengths of light, converting them into heat energy. This is due to the fact that black objects have a higher level of absorption and lower level of reflection compared to other colors. In contrast, colors like white reflect most of the light, resulting in less heat absorption. Therefore, black is the color that absorbs the most heat.

Explanation
When you put a bottle over a candle flame, the flame consumes the oxygen inside the bottle. As the oxygen is used up, the flame gets extinguished due to lack of oxygen. This happens because fire needs oxygen to sustain itself. Therefore, nothing happens when you put a bottle over a candle flame.

Explanation
Cows require approximately 13,000 liters of water to produce one kilogram of beef. This is because cows need water for drinking, as well as for the growth and production of the plants they eat. Additionally, water is used in the processing and manufacturing of beef products. Therefore, the cow-beef option is the correct answer for the animal that needs 13,000 liters of water to make a kilogram of that product.

Explanation
The scientific name for a tadpole is "pollywog".

Explanation
The correct answer is "zygote, embryo, fetus (baby)". This answer provides a sequential and accurate description of the stages of a developing child. The zygote stage refers to the fertilized egg, followed by the embryo stage where the cells start to differentiate and develop into various organs and body parts. Finally, the fetus stage represents the later stage of development before birth, where the baby is fully formed and continues to grow and mature.

Explanation
The tuna is considered the fastest aquatic animal because it is capable of swimming at speeds up to 75 kilometers per hour. Its streamlined body and powerful muscles allow it to swim quickly and efficiently through the water. Tuna are known for their speed and agility, which helps them to catch prey and evade predators in the ocean.

Explanation
The Dover Demon is considered a mystery because it is an alien-like creature that was reportedly sighted in Dover, Massachusetts in 1977. Described as having a hairless, pale body, large eyes, and long fingers, the Dover Demon's existence and origins remain unexplained. Sightings of this creature have sparked debate and speculation among cryptozoologists and UFO enthusiasts, making it a mystery in the realm of unknown creatures.

Explanation
The correct answer is Cheetah. Cheetahs are known for their incredible speed, making them the fastest land animals. They can reach speeds of up to 70 miles per hour in short bursts, enabling them to chase down their prey quickly and efficiently. Their long, slender body, lightweight build, and flexible spine contribute to their exceptional speed and agility. Cheetahs also have specialized adaptations such as non-retractable claws and large nasal passages that allow for increased oxygen intake during high-speed pursuits. Overall, the cheetah's remarkable speed sets it apart as the fastest land animal.

Explanation
The correct answer is "sleeping, eating..etc." because these activities provide our body with the necessary nutrients and rest to generate energy. Sleeping allows our body to rest and recover, while eating provides us with the fuel and nutrients needed for our cells to produce energy through various metabolic processes. Therefore, engaging in these activities helps us obtain the energy required for our daily functioning.