Ascientific law is
1. a university accepted conclusion based on testing

2. always changing a new evidence is presented

3. based on new evolving theories

4. often debated in the scientific community

5. one step toward forming a theory

In a copper wire, a temperature increase is the result of which of the following

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.