Choose all the answers that apply. Matter in an ecosystem: must be continuously replenished is part of a closed system is recycled and reused is returned to the earth by decomposers is always decreasing

The act of doing what's best for the group is called commensalism O mutualism altruism symbiosis

What is a pacu fish's predators/dangers

Amoebic dysentery is caused by which of the following? a. fungi b. viruses c. protists d. bacteria

Which statements about the modification of chromatin structure in eukaryotes are true?1. Acetylation of histone tails is a reversible process. 2. DNA is not transcribed when chromatin is packaged tightly in a condensed form. 3.

A neuron that recieves incoming sensations is? A) afferent neurons B) efferent neurons C) interneuron D) glial cells

What is one of the purposes of inflammation? encourages infection concentrates toxins prepares an injured area for healing inhibits adaptive immune responses?

Which combination of sex chromosomes results in a male human being

Which climate is warm, wet, and located on the edges of the tropics? a. temperate marine b. highlands c. temperate continental d. polar

Which describes the work of Nicolaus Copernicus? experimenting on human bodies studying prisms and the nature of light developing a heliocentric theory inventing analytic geometry

What large peninsula is linked to the mainland of greece by the isthmus of corinth?