Studies indicate that for every square metre of area, a lake has 150 g of producers, 16 g of herbivores,
and 4.5 g of carnivores. This data may be used to draw a
(a) a pyramid of numbers
(b) an energy pyramid
(c) a pyramid biomass
(d) a pyramid showing the number of KJ for each trophic level

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.

a and c are the answeres

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

which fault and or fold did you find most difficult to diagram