I found an abandoned sparrow egg, what can i do to save it?!?!?

In my grandmothers yard their was a nest and one of the eggs hatched and their was another egg that still hadn't hatched, today she found the hatched baby bird dead by the tree on the ground close to the other egg that still hasn't hatched. i picked up the egg because obviously the mother wasn't coming back for it and am wondering if there is any thing i can do to save the egg and help it to hatch. Or maybe could it possibly already be dead, the nest was around 5ft.-6ft. from the ground. Thanks so much for any help!!!=]]]

What is the atmosphere's volume?

People always talk about how cars and stuff are emitting thousands and thousands of metric tons of co2 into the atmosphere. But never talk about how large the atmosphere is relative to the metric tons of co2 being emitted. So what is the atmosphere's volume? Also, at what rate do plants and forms of sea life absorb co2 and convert it to oxygen?

Help! My rabbit refuse to use her nest box!?

my rabbit has already pregnant for 27 days. I used to let her wondering inside the house, so she already pick a place to build her nest, and start building it. but it was outside her cage and in a place i don't think safe (and it is not safe). so i gave her a nest box inside her cage but she refuses to use it! she just rampaged it and being grumpy all day.. she insist to go out of her cage. what should i do? i know it's almost the big day but i don't think she's gonna use the nest box..

Help in Math Homework. With solutions.?

LOL you have to learn metric AND imperial, have fun learning and old system basically no one uses except a couple stupid *** countries(mainly america)

If you know the answer, it would be helpful.?

if you want AN answer , you should ask A question, in the right section. If you have 80 questions, you ask one at a time.

I found a baby bird that has fallen from its nest?

It has feathers and its eyes are open. I think it is injured in either its leg or wing. He is also shaking. I found him today and am now keeping him in a shoebox with towels a mushed banana. I have no clue what to feed him or what to do. I am very scared, I've never cared for a baby bird before and have no clue what i'm doing. If anybody could help I'd very much appreciate it! Or does anybody have a phone number for any rehabilitaion centers in orange county? Thank you soo much for your help!

Its been over a week since i applied advantage but why does my puppy still have fleas?

i put his bedding in the freezer to kill the fleas on there but i don't know what to do with my bedding. if i wash it will more fleas hatch. i have laminate flooring so if i bleach and mop my floor will that kill any of the fleas maybe nesting under the bed??