1) temperature, sunlight, and rainfall
2) humidity, location, and humans
3) soil type, soil bacteria, and soil water
4) insects, carbon dioxide, and nitrogen in the air
Which term includes all of the interactions that occur between the organisms and the physical factors in a pond environment?
1) population
2) ecosystem
3) abiotic
4) competiton
The amount of salt in the air and water of coastal areas determines which species can exist there. In these areas, salt functions as a
1) source of energy
2) biotic factor
3) food source
4) limiting factor
Peter
,I even wrote to Al Gore ,and to Jane ,and made several sugestions in the forum
2 hours Ago it happened ,
three cheers for Yahoo
does any one else think this is great
(now its a question)
Chrissie ask a question but does not have any way for people to answer her ,Ecology is a blend of Greek and latin meaning the study or the knowledge of the home (environment)
so Environment is the place and Ecology is the knowledge of the place ,In essence both mean the same thing ,but for those who have a problem with that we have already ASKED YAHOO IF THEY CAN INCLUDE THE NAME ECOLOGY WITH ENVIRONMENT again
Miguel
ok so these are the q’s:
1. how does DDT enter a food web
2. which organisms contain the most DDT
3. at what trophic level are these species?
4. What is the relationship between the trophic level on an organism and the concentration of DDT in its body?
5. How many times greater is the concentration of DDT in the fish than in the seawater? How many times greater is it in the dolphins than in the seawater?
6. Explain why animals at the top of the food chain are particularly at risk from poisons in the environment?
Please help me answer these q’s answering any would help me a ton:)
any sites would be great too:)
Mike
1. In your own words, explain what DDT is.
2. What type of animal tissue does DDT dissolve (and become stored) in?
3. How does DDT enter aquatic environments?
for number two i wrote what i think i remember from a class discussion
i wrote that its stored in fatty-tissues
Ellen
2. is there ANY possibility of getting pregnant from **** ***?
Asked by adriana L - 0 answers - Other - Health - 4 minutes ago
3. oh my god will all u f-ucking three year olds stop posting junk about sum guy “that u like”its freking enoying
Asked by abfroman_33 - 0 answers - Teen & ******* - 3 minutes ago
4. i donno if im pregnat im 11 but i dont wanna go to the doctor cause he might know then he will tell my mom?
Asked by jydiwitt - 0 answers - Singles & Dating - 3 minutes ago
5. do any reserch has been done on papaya’s *** change.. from male to female??
Asked by razaa - 0 answers - Other - Education - 3 minutes ago
Kathy
9. In mountainous areas of western North America, north-facing slopes (compared with south-facing slopes) would be expected to
a. receive more sunlight
b. be warmer and drier
c. support biological communities similar to those found at lower elevations and higher latitudes
d. support biological communities similar to those found at higer elevations and higher latitudes
e. b and c
11. Thorough mixing of water in temperate lakes during the spring and fall turnovers is made possible by which of the following?
a. warm water layered at the top
b. cold water layered at the bottom
c. a pronounced thermocline under the surface
d. changing water temperature profiles
e. currents generated by nektonic animals
14.Imagine soem cosmic catastrophe jolts Earth so that its axis is perpendicular to the orbital plane between Earth and the sun. The most obvious effect of this change would be
a. the elimination of tides
b. an increase in the length of night
c. an increase in the length of a year
d. the elimination of the greenhouse effect and a cooling of the equator
e. the elimination of seasonal variation
15. Which of the following environmental features might influence microclimates?
a. a discarded soft-drink can
b. a tree
c. a fallen log
d. a stone
e. all of the above
16. As climate changes because of global warming, species’ ranges in the northern hemisphere may move northward. The trees are most likely to avoid extinction in such an environment are thsoe that
a. have wind-dispersed seeds
b. have animal-dispersed seeds
c. produce well-provisioned seeds
d. a and b
e. a, b, and c
20. You are interested in studying how organisms react to a gradient of abiotic conditions and how they coexist in this gradient. The best biome in which to conduct such a study is
a. mountains
b. an intertidal zone
c. a river
d. tropical forest
e. an eutrohpic lake
21. Coral animals
a. are a diverse group of cnidarians
b. are predominantly photosynthetic, multicellular algae
c. excrete external, carbonaceous skeletons
d. a and c
e. b and c
23.In the development of terrestrial biomes, which factor is most dependent on all the others?
a. the species of colonizing animals
b. prevailing temperature
c. prevailing rainfall
d. mineral nutrient availablity
e. soil structure
24. An area in which different terrestrial biomes grade into each other is known as a(n)
a. littoral zone
b. vertically stratified canopy
c. ecotone
d. abyssal zone
e. cline
25. Two plant species live in the same biome but on different continents. Although the two species are not at all colosely related, they may appear quite similar as a result of
a. parallel evolution
b. convergent evolution
c. allopatric speciation
d. introgression
e. gene flow
27. In which community would organisms most likely have adaptations enabling them to respond to different photoperiods?
a. tropical forest
b. coral reef
c. savanna
d. temperate forest
e. abyssal
Andre
One line petition to be submitted to the heads of states/countries and all other prominent leaders, administrators, scientists, and …
‘We the residents of various countries request all the heads of states/countries and other stake holders in the science, promotion and business of Genetically Modified (GM) plants and crops and all products produced from these un-natural and anti-nature plants to ban and help in eradicating all the Genetically Modified (GM) plants and crops and all products produced from these un-natural and anti-nature plants as we are 100% convinced of their scientifically and logically proven disastrous harmful effects on human & animal health, and environment & ecology’.
more >> at http://ecoindia.tripod.com
sincerely,
Dr Sudhir Kumar Kaura
PhD Genetics (Anti GM Crusader based at India)
Beverly
Rank the following three marine zones in terms of their overall productivity
(1 = highest 2 = intermediate 3 = lowest)
Neritic _______ Oceanic _______ Intertidal _______
Explain briefly the rationale for your ranking.
2 minutes ago
Explain, with examples, the role that species interactions play during ecological
succession.
1 minute ago
1. Which processes increase a population’s size?
a. Births and deaths
b. Births and immigration
c. Deaths and immigration
d. Deaths and emigration
True or false? Factors that determine the intrinsic rate of increase of a population
include the age of breeding and the number of offspring produced each year.
Brenda
