Plants
What do plants need to grow?
Sun, water
What do fish use to breathe underwater?
What organ in the human body is primarily responsible for bumping blood?
Heart
Which part of the plant is usually green?
leaf
What is the largest mammal in the world?
Blue whale
What is the hardest natural substance on Earth?
Diamond
What is the basic unit of life?
Cell
What do the bees collect from the flowers?
Nectar
What is the name of the star at the center of our solar system?
The sun
Which of the following is a greenhouse gas?
Carbon dioxide
What gas do plants absorb from the atmosphere?
Carbon dioxide
Which object in the sky is known as the earth's natural satellite?
Moon
What is the powerhouse of the cell?
What do bones need to grow?
calcium
What process do plants use to make their food?
photosynthesis
What planet is closet to the Sun?
Mercury
What do the outer layer of earth called?
crust
Which blood cells carry oxygen?
red blood cells.