Which two important things do many economics systems not considered to have value?

A. natural resources and human labor

B. supply and demand

C. capital and consumption

D. good and services

i was thinking A

How do chemoorganotrophs differ from chemolithotrophs? chemoorganotrophs are known as "rock feeders," whereas chemolithotrophs are known as "grass feeders.

Various small cell parts that may or may not have a surrounding membrane. What is it?

Describe two negative impacts of artificial selection

Curly hair, large nose, brown eyes: our ___ give the instructions that determine human traits A. Cells B. Gametes. C. Genes. D genotype

How does rough endoplasmic reticulum function?

Which of the following is NOT a correct match? Select one: a. Marius: first to allow landless citizens to become soldiers b. Sulla: first general to seize Rome and name himself dictator without time limit c. Pompey: member of the First Triumvirate d.

Organisms are classified as producers or consumers according to the way they

Recent research into the biological roots of homosexuality has focused on

Which of the following is a result of burning fossil fuels for energy? A. acid rain B. all of the above C. increased carbon dioxide levels in the atmosphere D. production of electricity

What is trophic cascade as mentioned in this video titled "How Wolves Change Rivers?" A• how the rivers flow throughout Yellowstone National Park.