What have farmers in the Amazon River Basin found to be the cause of reductions in the soil's fertility?

Answers

Answer 1

Answer:

the removal of native plants

Answer 2

Answer: The moist air removes nutrients from the soil.

Related Questions

What were two ways that the United States acquired territory
Which are useful for measuring position north or south of the equator? a.lines of latitude b.lines of longitude c.index contours d.map legends
What are the primary and secondary effects of earthquakes and volcanoes?
In North America, native pollinators often increase the quantity and quality of crops of native plants that are insect-pollinated more effectively than European honeybees do. The most likely reason for the phenomenon is that native pollinators _____________.
A state agency has contacted you to do a scientific assessment of kudzu in a nature preserve in southern Georgia. They are concerned about the effects of the non-native invasive vine on a small rare plant that grows on the forest floor in the preserve, but which is found nowhere else in the state. Kudzu is only growing in the east side of the preserve because it hasn't yet had time to invade further. In order to assess the effects of kudzu on the rare plant, you set up the following experiment: Site 1. On the east side of the park with the kudzu, you set up ten 1m x 1m plots on the forest floor. In each plot, you count the number of individuals of the rare plant. Site 2. On the west side of the park without the kudzu, you set up ten 1m x 1m plots of the forest floor. In each plot you count the number of individuals of the rare plant. In this experiment, Site 2 is your: a) variable. b) control. c) replication. d) hypothesis.

Which of the following is not something a geographer can explain to a historian?A) How people change their environment

B) How the environment changes people

C) Why people populated certain areas

D) Why people like other peopl

Answers

Answer:

D) Why people like other people

Explanation:

A geographer role is to access all the phenomenon in terms of the time, place and the space frameworks as he can tell about the impacts of the natural environment on the lives of the mankind his interaction with the natural world as dynamic and his footprints on the valuable resources of the country.

The geographer can tell how why the river valleys are the most populated place on rearh and also explain why man lives in communities but he cannot predict why people are like others.

That is a psychological aspect and that most of the geography is based on understanding the elements of the physical world.

I think the correct answer is D because geographer can explain thinks about earth, but not about people's feelings - that's job for sociology or psychiatry

The crust, mantle, and core are all part of thea. hydrosphere.
b. atmosphere.
c. biosphere.
d. geosphere.

Answers

The question says, then crust,mantle and core are all parts of. ....... The correct option is D. They geosphere is there solid part of their earth and it includes the rocks, minerals, etc.

The cross sections below represent three geologic columns, I, II, and III, exposed at three differentlocations. The rock layers have not been overturned. Letters A through E represent different fossils.
Which rock layer is the youngest?
(1) green shale containing fossil B in column I
(2) glacial soil containing fossil E in column III
(3) brown sandstone containing fossil C in column II
(4) gray limestone containing fossil D in column I

Answers

After looking at the cross sections in the photo you posted, you can clearly see the rock layers have not been overturned. After looking at all of the different fossils, you can determine that the youngest rock layer is the glacial soil containing fossil E in column 3. The correct answer choice is going to be choice number 2.

GIVING BRAINLIST THE ASNWER IS NOT A)

This regulation lays down the principle that exports from the European Community to third countries are free, they are not
subject to any quantitative restrictions."

European Community Council Regulation No. 2603/69, 20 December 1969

Based on this passage, the European Union has established

A) free-trade for imports

B) free trade for exports

C) trade barriers for imports

D) trade barriers for exports

Answers

Answer:

B) free trade for exports

Explanation:

CAN SOMEBODY PLASE HELP ME 30 PONITS FOR BEST ANSWER!!!!!!!!!!!!!!!!!!!!!Compare the three types of forests: Tropical rainforest, temperate deciduous forest, and boreal forest (also called the taiga).
1.Describe the three soil types. Before you learned about the biomes, which of the three would you have thought would have had the richest soil? Why?

2.For each of the three biomes, describe what you see as the biggest challenge to plants and animals--what environmental factor most drives their adaptations. (Example: For the desert, the factor would be the lack of water and heat.)

Answers

1. The tropical rainforest has leaching and poor nutrients, but some parts of the rainforest have fertile soil. The temperate deciduous forest has mull soils, which are full of organic material. The boreal forest/taiga soil tends to be young and poor in nutrients. Before I learned about these biomes, I would have thought that the rainforest would have the richest soil, since there are so many animals and plants. If there were so many animals, there would be a lot of animal deaths, which would lead to decomposers chewing up the body and turning them into fertilizer/nutrients for the soil.

2. In the tropical rainforest, a challenge would be access to light, since the trees form a canopy and cover the light in order to get their sunlight and get bigger. Also, since there are many animals in the rainforest (over 2,800 species of plants and insects alone), it would be hard to access resources and there would be much competition. In the temperate deciduous forest, there would be competition for light and space because the extreme amount of animals and the large trees. In the boreal forest/taiga, the plants wouldn't have good soil or a growth season, and the animals would have a very long and cold winter, which could cause freezing to death or lack of food and starving to death.

Hope this helps! :)

How are the trees different in these three biomes?

•Tropical forest consists of more…Tropical plants of course! These being: Palms, Orchids, ferns, vines, mosses, and more.
•Temperate forest tend to stick with more “dry” plants per say. Some examples: Oak, hickory, maple, elm, willow, ect.
•Ending with Boreal Forest, (otherwise known as taiga) inhabit plants ofwhich can survive harsher, colder climates. This includes: Pine, fir,and spruce. “Needle like pines” if you will.

Describe the three soil types. Before you learned about the biomes,which of the three would you have thought would have had the richestsoil? Why?

•Tropical Forest: Soil is nutrient-poor and acidic. Decomposition is rapid and soils are subject to heavy leaching.
•Temperate Forest: Soil is fertile, enriched with decaying litter.
•Boreal Forest: Soil is thin, nutrient-poor, and acidic.
Out of the three biomes, *Insert thoughts here*

For each of the three biomes, describe what you see as the biggestchallenge to plants and animals. What environmental factor most drivestheir adaptations? (Example: For the desert, the factor would be thelack of water and heat.)

•Tropical Rain forest: The lack of nutrients in the soil.
•Temperate Forest: Acid rain. <It kills trees & plants.
•Boreal Forest: Poor soil.

Copyright an answer from google answers, I do not claim ownership or take credit of the content in this answer, thank you

Describe how the Hawaiian Islands were formed and how they are evidence for mantle plumes.

Answers

Hawaiian Islands are volcanic islands so they were created by underwater volcanoes and as they erupted, the land was created.

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Select all the answers that apply. Types of evidence that astronomers use to estimate the age of the universe and stars include _____. radioactive dating of rocks fossil evidence movement of galaxies molecular clocks chemical composition of the Sun Geological evidence of the age of the earth includes _____. radiometric dating of rocks fossil evidence comparative anatomy molecular clocks gradual processes of rock formation