Students are growing plants in pots on the windowsill of their classroom. After spring break, a student notices
that one of the potted plants furthest from the
windowsill has changed shape, as shown below... Which
statement best explains why this plant grew at a
different angle?
A plant growth hormone accumulates in the shaded side
of the stems, causing the lower leaves to fall off.
A plant growth hormone accumulates in the shaded side
O of the stems, stimulating those sides to grow faster and
bend toward the light.
A plant hormone accumulates in the unshaded side of
plant cells, causing the plants to grow. much faster
O
A plant hormone accumulates in the shaded side of plant
cells, stimulating the plants to produce more flowers.

How does deforestation affect the water cycle? a. it increases the amount of runoff b.it increases the amount of percolation c. it increases the amount of transpiration d. it increases the amount of precipitationa it increases the amount of runoff

Bisphenol a (often called bpa) is a chemical found in products that people use every day, from water bottles to food containers to children's toys. unfortunately, bpa leaches out of its many products and makes its way into our bodies. what are the health effects of bpa exposure? ongoing research is finding that elevated exposure to bpa can affect a wide variety of developmental and physiological processes, but one of the first studies of bpa's health effects came about because of a simple mistake in the lab. at a laboratory at case western reserve university in 1998, geneticist patricia hunt was making a routine check of her female lab mice. as she extracted and examined developing eggs from the ovaries, she began to wonder what had gone wrong. she noticed that many of the eggs showed problems with their chromosomes, and some had irregular amounts of genetic material, which can lead to miscarriages and birth defects in mammals. she learned that a lab assistant had mistakenly washed the plastic mouse cages and water bottles with a harsh soap, releasing bpa from the plastic. knowing that bpa is an endocrine disruptor, a chemical that can enter organisms and mimic hormones, hunt set out to discover whether it had adversely affected her mice.

Lucia is walking barefoot in her yard. she accidentally steps on a nail. how will her nervous system work to generate a reaction? arrange the eventschronologically.