Bacteria add carbon to the carbon cycle by being consumed by larger organisms, such as plankton.

decomposing dead organisms.

exchanging carbon dioxide and oxygen gases.

performing photosynthesis.

1) (b)

2) (d)

3) (c)

4) (a)

5) (d)

Explanation:

1) (b) carbon sink

2) (d) performing photosynthesis.

3) (c) organisms exhale carbon dioxide.

4) (a) cacti

5) (d) mitochondria

there is no stairs in bungalow

explanation:

poof

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: