Biology, 31.01.2020 04:01 johnmarston60
The zebra mussel is a shellfish native to europe. during the early 1900's, it was accidentally brought to the united states in the ballast of a ship traveling to the great lakes. it has no predators in the great lakes. what impact are zebra mussels likely to have on food chains in the great lakes?
Answers: 1
Biology, 21.06.2019 21:30
Kelly ran electricity though a sample of water using electrolysis. the water changed into two gases, x and y. it was not possible to break down the gases x and y into simpler particles.
Answers: 3
Biology, 21.06.2019 23:30
What is the relationship between absorbance of light and the rate of photosynthesis?
Answers: 1
Biology, 22.06.2019 02:00
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.
Answers: 2
The zebra mussel is a shellfish native to europe. during the early 1900's, it was accidentally broug...
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Social Studies, 04.08.2019 06:50
Health, 04.08.2019 06:50
Social Studies, 04.08.2019 06:50