Hemophilia is a condition in which blood does not clot properly. what is the main effect of this condition?

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

What was the land like over 500 million years ago? what was under the sea?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism