HELP ASAPPP DOING TEST QUESTION:according to the chart on page 5, what is true of solar energy

-it is a far less common source of electricity generation than wind
-it is likely to replace natural gas a primary source of electricity
-it is less reliable than geothermal sources for generating electricity
-it is more commonly used the petroleum to generate electricity

What is one way that the author makes a distinction between the first transcontinental railroad and the first transcontinental passenger flights in 1936

The library carries many current books.what is the adjective

Biologists recognize five levels of cell organization. the lowest and simplest is the cellular level. organisms here are either unicellular organisms, like protozoa, or colonial organisms. colonial organisms are composed of single-celled individuals that stay together to sustain the life of the whole colony. next on the scale of complexity is the level occupied by tissue. a tissue is a group of similar cells which perform a similar activity. tissues that are organized around a common function together make up an organ, the third level of complexity. the fourth level of organization is the system, formed by a group of organs which together perform a specific bodily process. the fifth and highest level is the organism level, in which body systems work together in a structure capable of independent life. main idea: