The diagram below shows part of the rock cycle. Which type of rock does A represent?

Metamorphic rock
Rock formed by cooling
Rock formed by compaction
Sedimentary rock

Wind energy is plentiful in regions with vast open spaces it is a non polluting renewable resource what could be an economic factor that makes the use of this resource less feasible then non renewable resource even in such regions

Apart of an ecosystem that can restrict the growth of a population is referred to as

Agenus is a taxonomic grouping that identifies a collection of species. when a scientist discovers a new species, how is this species assigned to a genus