The trachea is completely surrounded by rings of cartilage, resulting in an organ that is inflexible
Indicate whether the statement is true or false
FALSE
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Since 2008, grizzly bears (Ursus arctos horribilis) have been spotted farther north than their historic range. As a result, grizzly bear habitat now overlaps polar bear (Ursus maritimus) habitat. The two species of bears, which are capable of mating and producing viable offspring, are considered separate “ecological” species because historically they lived in different habitats and never met. However, in 2006 a hunter shot a wild grizzly-polar bear hybrid known as a grolar bear, the first wild hybrid ever found. This overlap is due to which of the following threats to biodiversity?
a. overharvesting b. habitat loss c. global climate change d. introduction of exotic species
Why are genetic databases so important to the study of modern genetics?
What will be an ideal response?
Why deserts are at certain latitudes
What will be an ideal response?
What is the diagnostic structure produced by Paracoccidioides brasiliensis?
A) spiny spores visible by brightfield microscopy B) "steering wheel" or "captain's wheel" buds visible by brightfield microscopy C) spherules observed in tissue samples D) yeast buds that are not dissolved by KOH E) dimorphism when grown in the lab