Scientists use many different methods of investigation. When possible, scientists want to actually experiment or observe an event. Which method is useful when
developing a scientific reasoning for an event that cannot be studied directly?
O
O
Conduct a field survey of bird populations in an area.
Observe the effect of various fertilizers on com crop yields.
Use a computer model to study how the ocean liner Titanic sank
.
Use a wind tunnel to measure air drag on various types or automobiles
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When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

What kinds of foods are high in lipids?