Because in winter 1 habitat might get too cold so the bird might have to move to a warmer habitat in winter
Is this a question or a moment of someone needing advice?
The presence of protein in the urine is called proteinuria. Proteinuria is an indicator that THE KIDNEYS' FILTRATION MEMBRANE HAS BEEN DAMAGED.
It is the work of the kidneys to filter the blood and remove all the waste products while conserving the materials needed in the body. When body materials such as protein begin to come out with urine in excess of the normal quantity expected, then that means that the kidney is not filtering the blood very well again and this is usually due to damage in the kidney glomeruli which perform the process of filtration.
An astronomical unit (AU) is the approximate distance from the earth to the sun. The answer is D.
Animal cells communicate via their extracellular matrices and are connected to each other via tight junctions, desmosomes, and gap junctions
