Thomas constructs a model by completing the following steps 1. Draw a diagram that shows where oxygen is found on Earth, including the atmosphere, bodies of water landi, and liscing things
2. Draw arrows to show how oxygen moves and changes form from one location to another
Label each arrow
Thomas has constructed an example of what type of ecological model?
A biogeochemical cycle
OB food web
energy pyramid
D geological system

Need ! will give 20 points! what are two ways that diatoms differ from slime molds? the external coverings of diatoms are made up of (silica, chitin or peptidoglycan), while slime molds have cell walls containing (silica, peptidoglycan or chitin). diatoms are (chemoheterotrophs, photoautotrophs or chemoautotrophs) because they make food through photosynthesis, while slime molds are (heterotrophs, phototrophs or autotrophs) because they eat decaying plant matter.