Suppose scientists noticed that several tundra plant species were declining in number. At the same time, they noticed that certain plant-eating insect species increased greatly in number, but two species of migratory birds that eat mice, spiders, and other small animals were declining. What one factor might account for all of these observations? Arctic mice were eating more plants.

Wolf spiders had almost completely disappeared.

Temperature changes were affecting the birds’ feeding patterns.

Some sort of disease was spreading across the tundra.

Which type of neuroglia is found outside of the brain?

Coat color in cats is determined by genes at several different loci. at one locus on the x chromosome, one allele (x ) encodes black fur and another allele (xo) encodes orange fur. females can be black (x x ), orange (xoxo), or a mixture of orange and black called tortoiseshell (x xo). males are either black (x y) or orange (xoy). bill has a female tortoiseshell cat named patches. one night, patches escapes from bill\'s house, spends the night out, and mates with a stray male. patches later gives birth to the following kittens: one orange male, one black male, two tortoiseshell females, and one orange female. what are the genotypes of patches, the stray male, and the kittens?

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules