Identify the term synandrous.

Identify the term associated to the plants that complete their life cycle within a short period of time.

Identify the personality.

Identify the producer.

An element occupies group number 15 and period number 2 reacts with hydrogen under high pressure and in the presence of a catalyst it terms a hydride (A). In presence of excess of air and in the presence of platinum it forms an oxyacid (B). Identify the element, A and B.

Identify the fresh water ecosytem.