What do you mean by nominal system of nomenclature? Fastpl​

Aboy with an extra x chromosome probably has which of the following syndromes?

What type of plant is good for a bioassay and where can i buy it? i only have a month.

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.