Earth is composed of four open systems that work together—the atmosphere, the hydrosphere, the biosphere, and the geosphere. The atmosphere refers to all air around you as well as the air that extends from the surface of the Earth into space. The hydrosphere refers to Earth’s water; this includes oceans, lakes, glaciers, rivers, streams, and groundwater. The biosphere refers to all organisms on Earth, whether they live in air, on land, or in water. The geosphere refers to the Earth’s interior, rocks, minerals, landforms, and processes that shape the Earth’s surface. Carbon is one of the six elements that are common to all living things. It is the basis for all life on Earth. Carbon moves thr

b exhibiting favoritism toward the kikuyu people.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

the two answers are a, the population of birds with large beaks will increase on the island, and c, the trait for large beaks will be passed on to future generations through natural selection. the reason for that is because if the birds that have beaks developed for eating small seeds lose all of their food, they will go hungry and eventually starve because they physically cannot eat the large seeds, therefore making the population of large beaked birds higher. also, if the trait of large beaks are dominant on the island over small beaks, then over time the large beaked birds will reproduce more and more, while the smaller beaked birds will reproduce less and less because they can't survive with the food provided. that leads to the trait of small beaks disappearing and the trait of large beaks taking over the island.