Hemoglobin is the pigment in red blood cells responsible for carrying oxygen
Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained within a nucleus, and many other organelles.
Ecology
Ecology studies the life of living things and their environment.
5a. the force moving object one place to the next
5b the force moving object without anything happening
5c the force moving a object and changing its position
