Asset Test On Science

Explanation
Water covers approximately 71% of the Earth's surface, making it the correct answer. The Earth is often referred to as the "blue planet" due to its abundance of water. It can be found in oceans, seas, lakes, rivers, and even in the form of ice in polar regions. Water is essential for supporting life, regulating climate, and playing a crucial role in various natural processes on Earth.

Explanation
Rabbit is a mammal because it possesses all the characteristics that define mammals. It has hair or fur, gives birth to live young, and produces milk to nourish its offspring. Additionally, rabbits are warm-blooded and have a four-chambered heart, which are also traits of mammals.

Explanation
A ten-year-old sister with no teeth would have difficulty eating hard or crunchy foods like peanuts, sugarcane, and raw carrot. However, she can still consume soft foods like the paste of ripe banana, which would be easier for her to eat without teeth.

Explanation
The best umbrella cloth should not allow liquids to pass through. This is important because the purpose of an umbrella is to provide protection from rain, and if the cloth allows liquids to pass through, it would not effectively keep the user dry. The other criteria mentioned, such as being heavy or not white, are not necessarily indicative of the quality of the umbrella cloth in terms of its functionality to repel liquids.

Explanation
A frog catches insects because its tongue is sticky. This stickiness allows the frog to quickly and effectively capture prey by extending its tongue and then retracting it, bringing the insects back into its mouth. The sticky texture of the tongue helps the frog to hold onto the insects as it pulls its tongue back, ensuring a successful catch.

Explanation
The word "MOM" will look the same in a mirror because it is a palindrome, meaning it reads the same forwards and backwards. When the word "MOM" is reflected in a mirror, it will still appear as "MOM".

Explanation
Among the given options, 999 is the largest number. It has three digits, whereas the other options have either two digits or a decimal point, making them smaller than 999.

Explanation
The small intestine absorbs digested food. It is the longest part of the digestive system and is responsible for breaking down food further and absorbing nutrients into the bloodstream. The inner lining of the small intestine contains numerous tiny finger-like projections called villi, which increase the surface area for absorption. These villi are covered with microvilli, which further enhance absorption. The absorbed nutrients are then transported to the bloodstream and distributed to the body's cells for energy and other functions.

Explanation
The skin is considered a sense organ because it contains sensory receptors that allow us to perceive touch, pressure, temperature, and pain. These receptors send signals to the brain, allowing us to be aware of our surroundings and interact with them. Additionally, the skin also plays a role in protecting our body from harmful external factors and regulating body temperature.

Explanation
Dogs, elephants, and humans are mammals, which do not lay eggs. Mammals give birth to live young instead.