Different environments can be affected by various types of pollution. how would bacteria and algae in a pond kill fish and other aquatic wildlife?
a.
they can crowd out other forms of life.
b.
they can infect other organisms and cause diseases.
c.
they can secrete a poisonous substance.
d.
they can use up most of the oxygen in the water.

Which of the following is an example of this type of co-evolution

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?

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?