Sienna decides to study movement in plants. identify the correct sequence of the scientific steps, and place the steps in order.
she developed a
hypothesis that
plants move toward light.
over six weeks, both
plants grew toward their
available light source.
she put one plant near
the window and another
in a dark room with a
small opening that let
light come through
every few days she
checked the plants
and recorded the
direction of their
growth
she observed that a plant
kept near the window grew
through a slit in the blinds.
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The construction of phylogenetic trees is a mapping out the proposed divisions and common ancestors of all living species. traditionally, these trees have been built using morphological data, such as appearance and embryology. recently, it has been possible to construct these trees using molecular data. phylogenetic trees based on different types of information agree with each: that there is strong evidence of a real underlying common descent. this phylogenic tree is composed based on molecular data (rrna). what statements can we infer are true about the organisms throughout the tree? because the tree is rooted, all branches share a common ancestor. all organisms have some sort of cellular structure/organization. all eukaryotes evolved from bacteria. since the organisms contain rna, they share the same dna. if the organisms contain rna, the share the same four nitrogen bases.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide