science
We live on this planet.
What is Earth?
what does H2O stand for ?
What is water ?
what is 5X5 ?
25
what is the hardest substance on earth ?
What are diamonds ?
what is 20X10 ?
what is 200?
whos the first astronaut ?
who is Neil Armstrong
what gas is earths atmosphere made of ?
what is oxygen ?
what is 15/5 ?
what is 3 ?
what president is on the 20 dollar bill ?
who is Andrew Jackson ?
what element is o2 ?
what is oxygen ?
what is 100/5 ?
what is 20 ?
How many days does it takes earth to orbit around the sun ?
365 days
what is the largest organ in the human body ?
what is skin ?
what is 500X10 ?
what is 5000