Ecological pyramids are a good model to use to show the relationships between trophic levels in an ecosystem because: A: they are exact

B: it shows that the lower levels are needed to support the higher levels

C: it shows that the higher levels do not need any support from the lower levels

D: it shows that the higher levels are bigger than the lower level

The term equestrian relates to which animal? bulls cows horses pigs

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.

In a leaf, dermal tissue a) stores food b) stores carbon dioxide c) releases oxygen into the air d) transports water from the roots