BIO SCI 55 Lecture Notes - Lecture 3: Logistic Function, Population Pyramid, Thomas Robert Malthus

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28 Aug 2016

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We should care about the tropics because they contain 75% of the biodiversity in the world. They are also the most at risk because there is a growing poor population who do not care about the environment. The two variables are (high) temperatures and precipitation. Question 2: in chapter one there is a discussion of exponential growth. Thomas malthus/ if you were to turn planet earth into vegetarians we can increase the population of earth by 1/3 without a detrimental impact on resources it costs more to produce meet. A first world"s pyramid looks like a tree trunk whereas the third world is the pyramid shape. This is important because, once the young age groups move into reproductive years, there will be a large population boom. The west: california, nevada, washington, arizona area west of the rocky mountains. Currently, we have had four years of the most significant droughts, hitting california the hardest.

Related Questions

Question 55.55. The fact that marsupials are not as diverse inSouth America as they are in Australia would be classified as whattype of evidence for evolution? (Points : 1.25)

biogeographical

anatomical

biochemical

fossil record

molecular evidence

Question 56.56. What is the name of the hypothesis that statesthat the very first living thing came from nonliving chemicals?(Points : 1.25)

cell theory

chemical evolution

Darwinian evolution

speciation

organic chemistry

Question 57.57. What structures are necessary for thereplication process to occur in a cell? (Points : 1.25)

enzymatic proteins

carbohydrates

lipids

starches

viruses

Question 58.58. The flipper of a whale and the wing of a birdare homologous structures. (Points : 1.25)

TRUE

FALSE

Question 59.59. Both the RNA-first and the protein-firsthypotheses must propose a manner for DNA to become the geneticmaterial as it is today. (Points : 1.25)

TRUE

FALSE

Question 60.60. The early atmosphere of Earth consisted mainlyof (Points : 1.25)

hydrogen, oxygen, and carbon dioxide.

oxygen, water vapor, and carbon monoxide.

water vapor, nitrogen, and carbon dioxide.

hydrogen, carbon monoxide, and nitrogen.

water vapor, hydrogen, and carbon dioxide.

Question 61.61. Which of the following biogeochemical cycles isa sedimentary cycle? (Points : 1.25)

carbon

nitrogen

phosphorus

water

ice

Question 62.62. What two characteristics define a biome? (Points: 1.25)

temperature and the types of plants found there

amount of precipitation and the types of plantsfound there

temperature and rainfall

latitude and rainfall

altitude and temperature

Question 63.63. The atmosphere would be considered whatcomponent of a chemical cycle? (Points : 1.25)

reservoir

exchange pool

biotic community

source

none of these

Question 64.64. Are humans capable of upsetting globalbiogeochemical cycles with their activities? (Points : 1.25)

YES

Question 65.65. The richest marine ecosystems are those in theopen water where large fish abound. (Points : 1.25)

TRUE

FALSE

Question 66.66. What is involved in the process ofdenitrification? (Points : 1.25)

conversion of nitrogen gas to ammonium

conversion of nitrogen gas to nitrate

conversion of ammonium to nitrate

conversion of nitrite to nitrate

conversion of nitrate to nitrogen gas

Question 67.67. What is the loss of water from plants called?(Points : 1.25)

runoff

precipitation

evaporation

transpiration

transference

Question 68.68. Decomposers perform a valuable service becausethey recycle nutrients. (Points : 1.25)

TRUE

FALSE

Question 69.69. There is more nitrogen gas in the atmospherethan there is oxygen. (Points : 1.25)

TRUE

FALSE

Question 70.70. Which of the following defines an ecosystems?(Points : 1.25)

a group of organisms of the same speciesinteracting together

all of the living organisms in an area interactingtogether

all living organisms and the nonliving environmentinteracting together

aspects of the nonliving environment interactingtogether

all the places on Earth where living organisms canbe found

Question 71.71. In MDCs, many people do not eat enough protein.(Points : 1.25)

TRUE

FALSE

Question 72.72. The age structure diagram of MDCs is shaped like(Points : 1.25)

a pyramid.

an inverted pyramid.

a rectangle.

an oval.

a cube.

Question 73.73. The biggest problem in moving toward asustainable society with the LDCs is overconsumption. (Points :1.25)

TRUE

FALSE

Question 74.74. A sustainable society is one that provides allof the goods and services desired by humans. (Points : 1.25)

TRUE

FALSE

Question 75.75. In order to have a negative population growthrate, (Points : 1.25)

the birthrate must exceed the death rate.

the biotic potential of the population mustincrease.

the death rate must exceed the birth rate.

the carrying capacity for the population mustincrease.

only replacement reproduction can occur.

Question 76.76. Why should pregnant women and small children noteat certain fish? (Points : 1.25)

herbicide contamination

mercury contamination

pesticide contamination

lead contamination

PCB contamination

Question 77.77. What do hydropower and wind power have incommon? (Points : 1.25)

Both require the building of dams.

Both lead to an increase in greenhouse gasemissions.

Both are renewable energy sources.

Both result in the depletion of fossil fuels.

Both require the use of photovoltaic cells.

Question 78.78. Which organism would be most impacted bybiomagnification? (Points : 1.25)

eagles

rabbits

wheat plants

earthworms

corn

Question 79.79. Most of the freshwater in the world is used for(Points : 1.25)

drinking.

bathing.

irrigation.

watering lawns.

industrial needs.

Question 80.80. Which of the following is not associated withgroundwater depletion? (Points : 1.25)

subsidence

sinkholes

saltwater intrusion

lowering of the water table

sediment buildup

silverarmadillo533

Exercise for writers (F):

Address each of the four following critical thinking areas to the statements listed below (B-F)

(I have already completed (A) so you can use it as a reference)

1. Find the conclusion- try to summarize it short enough so a person driving 65mph could read it on a billboard.

2. Establish the premise-

3. Distinguish between fact, opinion, & reasoned (using both fact & opinion) arguments by evaluating its validity

Validity/Truth of a statement can be made by:

Personal experience, reference of an established authority on subject, internal consistency, plus consistence on facts we already know as true.

4. Distinguish faulty reasoning- which is in every one of the statements!

Please answer #1-4 (listed above) for the each of the following quotes:

F. âBut people talk about cap and tax and they arenât sure exactly what weâre talking about. Letâs get back to step one. What is the problem? Why do we have to have this tax in the first place? Itâs about carbon dioxide. Well, what is carbon dioxide? Letâs just go to a fundamental question. Carbon dioxide, Mister Speaker, is a natural byproduct of nature. Carbon dioxide is natural. It occurs in Earth. It is a part of the regular lifecycle of Earth. In fact, life on planet Earth canât even exist without carbon dioxide. So necessary is it to human life, to animal life, to plant life, to the oceans, to the vegetation thatâs on the Earth, to the, to the fowl that â that flies in the air, we need to have carbon dioxide as part of the fundamental lifecycle of Earth. As a matter of fact, carbon dioxide is portrayed as harmful! But there isnât even one study that can be produced that shows carbon dioxide is a harmful gas. There isnât one such study because carbon dioxide is not a harmful gas, it is a harmless gas. Carbon dioxide is natural. It is not harmful. It is part of Earthâs life cycle. And yet weâre being told that we have to reduce this natural substance and reduce the American standard of living to create an arbitrary reduction in something that is naturally occurring in the earth. Well weâre told the crux of this problem is human activity. Itâs humans that are creating more carbon dioxide! Is that true, or is that false? Well, carbon dioxide is a natural part of Earthâs atmosphere. The carbon dioxide is perhaps three percent of the total atmosphere thatâs in the Earth. So if you take a pie chart, and you have all of Earthâs atmosphere, carbon dioxide is perhaps three percent of that total. What part of human activity creates carbon dioxide? If carbon dioxide is a negligible gas and itâs only three percent of Earthâs atmosphere, what part is human activity? Human activity contributes perhaps three

percent of the three percent. In other words, human activity is maybe 3 percent

contributing to the 3 percent of carbon dioxide thatâs in Earthâs atmosphere. Itâs so

negligible â itâs a fraction of a fraction of a fraction of a percent â that it can hardly

be â be quantified.â (Spoken on the House floor on Earth Day, April 22, 2009, by Rep. Michele Bachmann)

Question1.1. Accidental alterationsduring DNA replication that give rise to variations in organismsare __________. (Points : 1)

adaptive traits
mutations
symbioses
random distributions

Question2.2. The largest reservoir ofcarbon in the carbon cycle is comprised of _________. (Points :1)

freshwater systems andoceans
plants and animals
sedimentary rock andfossil fuels
atmosphere

Question3.3. The principle of utility________. (Points : 1)

holds that any naturalresource should be available for use in manufacturing
holds that something isright when it produces the greatest benefit for the greatest numberof people
is not an ethicalstandard
cannot be used toestimate the value of natural resources

Question4.4. The two processes thatdetermine current biodiversity on a global scale are __________.(Points : 1)

allopatric speciation andimmigration
mutation and habitatselection
mutation and globalclimate change
extinction andspeciation