Answer:
The red balls here refers to the hydrogen and black balls refers to carbon.
Answer:
El manganeso es un oligoelemento que está presente en pequeñas cantidades en el cuerpo. (Manganese is a trace mineral that is present in tiny amounts in the body.)
Explanation:
Both English and Spanish form.
a notochord is definitely the backbone. it appears as a tiny flexible rod made from mesoderm cells. which is one third of the layer of embryos.
