What is the body's first line of defense against infection by foreign organisms? antibodies lymph nodes white blood cells the skin

In the water cycle , when does water undergo a chemical change

Which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.which statements about the fluid mosaic structure of a membrane are correct? select the three correct statements.the framework of a membrane is a bilayer of phospholipids with their hydrophilic heads facing the aqueous environment inside and outside of the cell and their hydrophobic tails clustered in the center.because membranes are fluid, membrane proteins and phospholipids can drift about in the membrane.the diverse proteins found in and attached to membranes perform many important functions.the kinky tails of some proteins keep the membrane fluid by preventing the component molecules from packing solidly together.membranes include a mosaic, or mix, of carbohydrates embedded in a phospholipid bilayer.

What is a food web? a. the structure used to trap food b. a set of complex carbohydrates c. a group of interconnected food chains d. the pattern of food nutrition