The greatest mass extinction of all time is occurring now, with extinction rates _____ times the historical background rate
1.10
2.100
3.1,000
4.10,000
3
Biology & Microbiology
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Why have many plants (i.e., C4 plants) developed ways to limit or avoid photorespiration?
What will be an ideal response?
Biology & Microbiology
A mutation in the Hoxc8gene in the ancestor of modern snakes caused its descendants to have ____
a. no forelimbs or necks b. vestigial forelimbs c. necks but not forelimbs d. no ribcages or limbs e. no forelimbs or hindlimbs
Biology & Microbiology
Autosomal dominant traits are inherited from affected parents. Indicate whether the statement is true or false
Biology & Microbiology
Every year certain parts of California have fires that sweep rapidly through the area, burning or endangering homes. What type of biome is found there, and why does it burn so frequently?
What will be an ideal response?
Biology & Microbiology