The total economic value of an ecosystem:

a. is composed of the direct values an ecosystem provides upon which a price can be placed, such as crops and medicinal plants.
b. is the monetary value of all of the services an ecosystem provides. includes all of the ecosystem services, future uses, and non-use values (such as cultural, intrinsic, and aesthetic values) of an ecosystem.
c. is composed of the utilized services and goods an ecosystem provides, such as water storage and filtration, even if they are not directly paid for.
d. is the monetary value of all of the services an ecosystem provides.
e. includes all of the ecosystem services, future uses, and non-use values (such as cultural, intrinsic, and aesthetic values) of an ecosystem.

b.is the monetary value of all of the services an ecosystem provides. includes all of the ecosystem services, future uses, and non-use values (such as cultural, intrinsic, and aesthetic values) of an ecosystem.

Explanation:

The total economic value of an ecosystem refers to all the services which are provided by an ecosystem that is used by now and in the future. Economic value is also refers to the analysis that how much cost is done on the services and how much profit be made from it. There are four terms used in economic value of an ecosystem i. e. Use value, non use value, option value and existence value.

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set