Scientists cite evidence that Earth's climate has been changing significantly over the past 50 years. They also argue that changes to Earth's orbital path are NOT the cause of these significant changes to climate. Which statement provides the STRONGEST evidence in support of the scientists' argument?
A. Variations in Earth's orbital path are consistent with accepted laws of planetary motion.
B. Earth's orbital path does not affect the amount of solar energy that Earth receives.
C. Changes to Earth's orbital path occur in a cycle that repeats every 100,000 years.
D. Climate change cannot be demonstrated over a span of 50 years.

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.

What are they five steps of cloning?

The term facultative anaerobe refers to an organism that