Scientists base many of their investigations on questions that test accepted theories. Which outcome of an investigation would cause a scientist to ask a different question? The observed results are different from the expected results. The investigation had many sources of error. Another scientist proposed the same theory. The expected results could be explained in different ways.

The expected results could be explained in different ways.

Explanation:

When the results of the investigation tell a different story from the proposed investigation, that is not related to the hypothesis or research topic, it is advisable that the scientist changes their hypothesis to fit the investigation outcome.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.