Answer:
C
Explanation:
Because between the earth and sun is empty space (vacuum) transfer of heat from the sun to earth can only occur through radiation- because convection and conduction require a medium. The is the same process that warms your hands when you place them beside a fire. When you put your hands above the fire, they are warmed through convection.
100,000 years ago is your answer
Classification systems are essential to science; they act as the scaffolding that enables scientists to stand up close and get to know plants
Onion (Allium) and Banana (Musa) are both eukaryotes and both have cell walls.
They should be carbohydrates, fats (lipids) and protein. they are labelled as primary food substances and they're essential to life. they can provide energy and raw material for life processing. although mineral ions and vitamin are important too, but they only need a small amount.
