Chemical reactions that release energy question 6 options: will always explode. need catalysts to occur. often occur spontaneously. will not occur.

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d.the size of the geographic area inhabited by a population can cause speciation.

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?