An important example of a "positive feedback loop" in the polar climate system is:
a. Scientists in remote places check on each others instruments.
b. Warming ocean water opens new areas for marine species.
c. Warmer winters cause more plant growth, providing more food.
d. Sea ice melt opens more ocean to sunlight, causing more melt.

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons

What is the difference between sex-linked traits and autosomal traits in humans? a. sex-linked traits can only be passed from fathers to sons, while autosomal traits can be passed on from both parents to offspring of any sex. b. sex-linked traits are passed on through the x and y chromosomes, while autosomal traits are passed on through the other 22 chromosomes. c. sex-linked traits only affect females, while autosomal traits affect both males and females. d. sex-linked traits refer to genes that are on the x and y chromosomes, while autosomal traits refer to genes on all 23 chromosomes.