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What type of ecological succession begins with no soil, no life, only bare rock.
Which of the following is a multicellular heterotroph that is non-motile (cannot move)?
The picture shows a student using a microscope to study a prepared slide of a single-celled organism.A single-celled organism can be classified as a prokaryote based on the absence of —
A) a cell membrane B) ribosomes C) chromosomes D) a nucleus
A remora is a fish that has an adhesive disk on the back of its head that it uses to attach itself to a large shark. When food floats away from the shark’s mouth as it feeds, the remora collects the scraps. Drawings of a shark with a remora attached and a remora’s adhesive disk are shown below.The relationship between the remora and the shark is an example of —
A) predation B) parasitism C) commensalism D) competition