If element X has 81 protons, how many electrons does it have?

A storm surge is a dangerous part of a. a tornado. c. the water cycle. b. a thunderstorm. d. a hurricane.

The endosymbiotic theory hypothesizes that mitochondria are the result of a symbiosis between a proto-eukaryotic cell and an alpha-proteobacterium. what aspect (s) of mitochondrial dna support this hypothesis?

An extended period of research during which a cultural anthropologist gathers firsthand data about life in a particular society is called

Through the miracles of medicine and technology, researchers have had some success with growing and transplanting hollow, relatively simple organs such as tracheas and bladders.

What levels of organization exist between organism and ecosystem

In modern classification system, unicellular organisms that contain chloroplasts and a nucleus would be considered; A) annelids B) protists C) archaea D) chordates

The northern copperhead is Agkistrodon contortrix contortrix, the southern copperhead is Agkistrodon contortrix mokasen, and the cottonmouth is Agkistrodon piscivorous. Therefore, A. all are subspecies of Agkistrodon. B.

What's a primary consumer

After plants absorb energy from the sun the energy gets converted into blank energy for the plant to carry out life activities

A type of succession in which an ecosystem damaged by fire is reestablished