Ques: Earthworm burrows help aerate soil, which is also good for plants, and insects and earthworms are very important in mixing and aerating the soil. Given these facts, what do earthworms mix among the following options: - roots - rocks - soil - nitrogen - ocean - Carbon - Crops - well
Ans: soil

Ques: Playing is just one of many ways that mammals and other animals learn how to behave, and playing is really fun. Given these facts, how do mammals learn to behave among the following options: - reusing things - Riding a bike - adding heat - sound - Movement - exercise - Having fun - sweating
Ans: Having fun

Ques: Aging is associated with the death of cells, and cell death is natural. Given these facts, what is natural among the following options: - wetland - aging - iPhones - immortality - magic - Light - Spruce - wind
Ans: aging

Ques: Aruler is used for measuring the length of an object, and meters are the standard to express measurement of length. Given these facts, what tool might measure something in meters among the following options: - A scale - microscope - bamboo - A protractor - feet - A ruler - biceps - A thermometer
Ans:
A ruler