Question

Please answer fast........
a) Why bats are not placed in the birds?
b) Why frogs are not seen in the winter?
c) why astronauts are not able to talk to each other directly?

Answer 1

*a. bats have mammary glands

*b. they go in hybernation since they are

coldblooded

*c.because in space any medium is not

present..

hope this helps✌✌

if u have any doubt u can ask in comment section...

Answer 2

A) 1. Bats are not placed in birds because bats possess mammary glands (milk producing glands).

2. Secondly cutaneous glands are absent in birds but present in bats.

B) because they are cold blooded.

C) Sound cannot travel through the vacuum of space, but visible light and other forms of electromagnetic radiation can. One of these forms is commonly called radio. The astronauts have devices in their helmets which transfer the sound waves from their voices into radio waves and transmit it to the ground (or other astronauts in space). This is exactly the same as how your radio at home works. Radio waves are often thought of as a form of sound because of their use in this way, but radio waves are NOT sound waves - they are a form of electromagnetic radiation analogous to visible light, and therefore can propagate through a vacuum.

Hope it helps you..
Please select as brainliest..✌️✌️