Which cell structures are sometimes found attached to the endoplasmic reticulum? a) chloroplasts b) nuclei c) mitochondria d) ribosomes

Number and variety of living organism; includes genetic, species, and ecological types

Match each term to its scientific definition. a)natural world b)scientific method c)theory 1) everything that can be observed or explained scientifically 2) a well-supported explanation of all the evidence related to a natural phenomenon 3) the procedure of scientific inquiry used to investigate natural phenomena

One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam. a. true b. false