Question

Two lines AB and CD intersect at point O. If ∠AOC : ∠COB = 3:7 , measure of ∠AOC is

Answer 1

Healthy terrestrial ecosystems are vital for human welfare and survival, as they provide us with essential products and benefits. Over 90% of our food comes from terrestrial ecosystems, which also provide energy, building materials, clothes, medicines, fresh and clean water, and clean air.