Which of the following is an example of chemical weathering?

freezing and thawing rainwater widens a crack in a sidewalk.
acid rain discolors and disfigures a limestone statue.
a stream rounds and smoothes rocks into pebbles.
a growing tree root splits a boulder in two.

the sun’s energy hits earth’s surface at the most direct angle at which of the following locations?

30° n or s latitude
south pole
north pole
equator
why does temperature increase with altitude through the stratosphere?

the air molecules are closer together in the upper stratosphere.
the stratosphere is closest to the sun.
all layers of the atmosphere increase in temperature with altitude.
the ozone layer is found in the stratosphere.
which gas is the most abundant in earth’s current atmosphere?

oxygen
carbon dioxide
hydrogen
nitrogen
which of the following was a major source of atmospheric oxygen?

decomposition of water
photosynthesis
volcanic eruptions
outgassing
barometers are used to measure which of the following?

humidity
temperature
wind speed
atmospheric pressure
if heat energy is transferred from direct contact between a warm object and a cold object, it has been transferred by

convection
radiation
conduction
the sun

frances ellen watkins harper writing was influenced by: b. the education she received growing up in the north.

she was born in baltimore, maryland, on september 24, 1825. after the death of her parents, her uncle reverend william watkins, a teacher at the academy for negro youth, raised and educated her. she also continued educating herself by accessing a library of the family she worked for, beginning writing poetry afterwards. as a civil rights activist and abolitionist, watkins greatly influenced her life and work.

the main character of "the secret life of walter mitty" retreats into a false pretense as a means escape from his mundane reality -- this is a flagrant issue seen in societies abroad, typically found in young adults and it is robbing our youths of their childhood.

explanation:

a thesis -- a well developed, formal thesis is required to be one sentence long. there are many themes in "the secret life of walter mitty" and i had resolved to give you one of the simpler ones while still honing it with class.

the economic activity signified in that scenario is a. production

in general, market production makes reference to the elaboration of a product or service which is destinated for economic purposes (to be sold) at money-price in a market. such product or service has to be principally tradable for money.

there is no money exchange involved in distribution, generalized reciprocity or balanced reciprocity.