It is a common observation that our breath is warmer than the air around us , does respiration have anything to do with this ?

The air we breathe out is warmer than air because.

Organisms of the oceans have a lesser salt content in their bodies than the sea water which has around 3.5% . The fluid could drain out of the body of the organism into the sea. This could be dangerous and fatal to the organism. How do they survive under such conditions?

Here is a news strip, read it carefully and answer the following questions. Villagers oppose sand mining project Santhabommali (Srikakulam) : People of more than 20 villages in two mandals of Srikakulam have raised a banner of revolt against the proposed beach sand mining project by a private company and threatened to intensify their agitation if the government does not cancel the project. The sand mining is being taken up to extract rich minerals from the area. The villages are located around the forest belt were mining was initiated. Do you think the villagers are doing a right thing to agitate ? Why ?

Here is a news strip, read it carefully and answer the following questions Villagers oppose sand mining project Santhabommali (Srikakulam): People of more than 20 villages in two mandals of Srikakulamhave raised a banner of revolt against the proposed beach sand mining project by a private company and threatened to intensify their agitation if the government does not cancel the project. The sand mining is being taken up to extract rich minerals from the area. The villages are located around the forest belt were mining was initiated. Do you think the villagers are doing a right thing to agitate? Why?

Consider the following four statements (i)-(iv) about certain desert animals such as kangaroo rat. i) They have dark colour and high rate of reproduction and excrete solid urine ii) They do not drink water, breathe at a slow rate to conserve water and have their body covered with thick hairs iii) They feed on dry seeds and do not required drinking water iv)They excrete very concentrated urine and do not use water to regulate body temperature. Out of these four, which two are correct :

Let us suppose you have two blocks and you do not know what material they are made of. The volume of one block is 30cm^(3) while the other is 60cm^(3). The second block is heavier than the first. Based on this information, can you tell which of the two block is denser ?

Here is a news strip, read it carefully and answer the following questions Villagers oppose sand mining project Santhabommali (Srikakulam): People of more than 20 villages in two mandals of Srikakulam have raised a banner of revolt against the proposed beach sand mining project by a private company and threatened to intensify their agitation if the government does not cancel the project. The sand mining is being taken up to extract rich minerals from the area. The villages are located around the forest belt where mining was initiated. What is the role of the government in this aspect?