Estimates of the cost of invasive species to the United States alone are in the tens of billions of dollars yearly. Annual federal expenditures on prevention and management of invasive species are estimated to exceed $1.3 billion.
Depending on what specific conditions are. Some of the color we see when we close our eyes is light that gets thru the eye lid. It usually has a red componenet to it because of the blood veins. Sone, especially right after closing our eyes is the various elements in our visual system settling down (rods, cones, ...).
The blue/black coloring of a black eye is caused by blood pooling under the thin skin of the eyelid and the area around the eye. This can happen after trauma to the eye area, and in this case you'll want to make sure that the eye hasn't been injured.But it can also happen because of trauma to the forehead.Check with your doctor to make sure that your child's black eye is simply a bruise, especially if you're not sure how it happened.If both of your child's eyes are black after a head injury â or if he has a nosebleed or bleeding in the white of his eye â his doctor will probably want to check him out.heck with your doctor to make sure that your child's black eye is simply a bruise, especially if you're not sure how it happened. If both of your child's eyes are black after a head injury â or if he has a nosebleed or bleeding in the white of his eye â his doctor will probably want to check him out.