Givingbrainleast Which biome has an average winter temperature of -26 degrees Celsius, gets 12-20 inches of rain per year, and has grazing caribou?

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from