Robert brown discovered an opaque area in the cell and named it the nucleus; matthias schleiden used the knowledge gained by brown to hypothesize that the nucleus had something to do with cell development. this is best described by which of these? a) plagiarism b) science is risky c) stealing information from fellow scientists d) scientific knowledge builds upon previous knowledge

The correct answer is D) scientific knowledge builds upon previous knowledge.

Explanation:

Scientific knowledge is mainly built by scientist on the previous knowledge of that area they are doing research. Previous data provide helps to scientists in making scientific knowledge which provides new data, theories, and discoveries.

Previous knowledge is used to carry out the work in the same area by researchers which improves the scientific knowledge by refinement and addition in previous scientific knowledge.

So Matthias Schleiden used the previous knowledge about the nucleus given by Robert Brown to hypothesize about the functioning of nucleus is best described by option D) scientific knowledge builds upon previous knowledge.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.