In people who stand for long periods, blood tends to pool in the lower limbs and this may result in varicose veins. what causes the varicose veins?

What determines blood type? a) agglutinogens proteins on platelets b) Agglutinogens proteins in plasma c) Agglutinogens proteins on red blood cells d) Agglutinogens proteins on white blood cells

What is identical for every cell in the 4 organs?

What are cell membranes composed of? Why is it important for the cell membrane to be semi-permeable?

What action will slow down the rate of a reaction

What is the definition of "Greek"?

What are some problems with the tree of life No plagiarism

Question 1 vascular plants are divided into two main groups: seedless vascular plants, including ferns and club mosses; and seed plants.

What can happen when earth materials overcome the force of friction holding them together? A. a flood B. a landslide C. erosion D. wildfire

The Sun's gravity pulls the Earth toward it and keeps it from floating away into space. What keeps the Earth from being pulled into the Sun? A) the Sun's gravity B) the Moon's gravity C) the Earth's gravity D) the Earth's sideways motion

A nurse is in the dining room and overhears a new nurse tell a client with body dysmorphic disorder that she's much too thin and must eat more before she can go home. the client bursts into tears and runs out of the dining room.