Picture included is the questions. first to answer them right gets brainliest

The blue segment below is a diameter of oo. what is the length of the radius of the circle?

Which ecosystem best fits the characteristics listed below? which ecosystem best fits the characteristics listed below? ii. seasonal migrations of millions of wildebeests, zebras, and elephants iii. large numbers of predators, such as lions iv. acacia trees and grasses a. the congo rainforest b. the african mangroves c. the serengeti grasslands d. the sahel

Soil color only reflects the amount of organic matter present in soil.