A. the amount of lean muscle in a body
phytoplankton falls on the first trophic level which is are "primary producers", it is because even smallest to smallest creatures like zooplankton feed on phytoplankton.
Your answer is C.
Hope this helps good luck
More information is needed to fully answer your question. Karst topography is the name given to a landscape dominated by features or land forms that develop on limestone bedrock. Typical limestone topography can be characterized by conical hills with star-shaped valleys known as cockpit karst. The landscape is also usually dominated by dolines or sinkholes. Caves, caverns and disappearing streams with dry valleys are also a characteristic feature. <span />
