The first operation involved in a Carnot cycle is

Which of the following lubricates ligaments or tendons and is an important constituent of synovial fluid of bones?

The output characteristics of an $n-p-n$ transistor represent,($I_C=$ collector current,$V_{C E}=$ potential difference between collector and emitter,$I_B=$ base current,$V_{B B}=$ voltage given to base,$V_{B E}=$ the potential difference between base and emitter)

The point of intersection of the line $\frac{x - 1}{3} = \frac{y + 2}{4} = \frac{z - 3}{-2}$ and the plane $2x - y + 3z - 1 = 0$ is

Many cells function properly and divide mitotically even though they do not have

Which part of the world has a high density of organisms?