Ascientist asked a question that was based on an observation. which is the next step the scientist should take?
the scientist should form a hypothesis and design an experiment.
the scientist should collect data and organize it into tables.
the scientist should draw conclusions based on the observation.
the scientist should record and communicate his hypothesis and results.

Anton created a chart listing different types of materials. which best complete the chart?

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.