What kind of predators? Protection from birds like Cormorants and KIngfishers you will need some form coarse netting over the pond. Egretts, storks, etc will need a finer netting. To protect from cats all you need is to make sure the water surface is a minimum of 6 inches below the ponds surrounds so that the cat can not reach the water with its claws.
No
No!
On xbox 360, make a pond by upgrading a shovel. make a pond 20 square perimeter and put bread on the field.
You CAN put one in a pond, but it will slowly sink.
It is not recommended to add chlorine directly to a pond, as it can harm fish, plants, and other aquatic life. If you need to treat a pond for algae or bacteria, use pond-specific products that are safe for the environment. It is important to follow manufacturer instructions and consider the impact on the ecosystem.
You get your spy phone, put it in the binoculars, and put them in a tree!!
Any exertion or exercise with make your heart rate rise. So, yes, swimming will make your heart beat fast, depending on how much energy you put into the swimming.
Pool swimming is more safe to open water but their are always life boats and life guards around so you are always safe and if you feel like your in trouble you put up your hand and they come and get you.
My neighbor has a large pond made with a swimming pool liner and has had no problems ,but his liner is one of the older liners and is really heavy duty .They don't seem to make them as heavy duty anymore .I guess they don't want them to last .The newer ones are much lighter so people can put in the pools themselves .
You don't really need to measure the water in a birdbath, just put some in a couple inches deep.
Depends how big, but what you could fo is make a hole, put a tarp in it and then put sand on the bottom and then fill it with water. Answer Normally this is done with cement. You would dig the hole, pour the cement floor and then sculpt the walls and the area that is level with the ground. A person that works with plaster in homes to plaster walls ( a dying profession with the invention of sheet rock), would know how to do this for you. Basically you would wind up with a cement pond that is actually a swimming pool.
That depend on where you put it and what you use to build it