whenever humans exhale carbon dioxide, plants take it in and use it to make a mixture of sunlight and water to create nutrients for itself. Once it creates the nutrients it releases oxygen which us humans use to breathe. This operation is called photosynthesis.
Answer:
notochord, a dorsal hollow nerve cord and pharyngeal slits.
Antigens determine blood type
Answer:
B. An increase in gene flow between the bird populations.
Explanation:
Layering is the most obvious feature of sedimentary rocks. The layers are piled one on top of the other.
