Questions

Controlled railroad crossing includes warning signs, red lights and railway gates, whereas absence of all of these warning signs like red lights and gates includes uncontrolled railroad crossings. 

In computer network nodes are

* the computer that terminates the data

* the computer that originates the data

* the computer that routes the data

Autotroph: This term means organisms that synthesise their own food. Troph means feeding. Auto means self. The green plants which synthesise their own food are called autotrophs. All others which depend upon the plants directly or indirectly are called heterotrophs.

Yes, when rain starts falling umbrella goes up for pretecting us from wetting.

Cl|Cl-C-CHO|Cl→Cannizzaro's ReactionNaOH Cl|Cl-C-COONa|Cl+ Cl|Cl-C-CH2 |21Cl-OH

The non green heterotrophic plants of plant kingdom are Fungi.

Patanjali