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1 year ago

The content of carbon di oxide in the atmosphere keeps on fluctuating. Explain

Geography

1 answer:

nevsk [136]1 year ago

6 0

Answer:

Plants play a large factor in fluctuating levels of CO2 within the atmosphere. Plants, through photosynthesis, convert CO2 gas into sugars and O2 gas powered through sunlight. In different seasons, the plants become active or deactivate and can undergo different amounts of photosynthesis. For example, during the winter, CO2 is very high, as many plants are not undergoing photosynthesis and cannot convert the CO2 into O2. But in spring, CO2 is drastically lowered as they are far more active in converting the atmospheric gas.

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Select all of the answers that apply.

storchak [24]

Answer:

Layer B is older than intrusion A

Intrusion A is older than layers C, D, and E.

Layer B is older than layers C, D, and E.

Explanation:

The laws of biostratigraphy can be applied to this lithological section in order to ascertain the relative ages of the beds.

Some of these laws that are applicable to this problem are:

Principle of superposition of strata : the oldest layer is always at the bottom of sequence while the youngest is on top in an undisturbed rock sequence.
Law of cross-cutting: when faults and fractures cuts through a rock sequence, they are younger than the rock they cross through.
Law of intrusions: Intrusions are younger than the rock layers they cut through

The geologic history of the beds here can be interpreted as thus:

Lithology B was first deposited
Then an intrusion A occurred and terminated at B
Layers C, D and E were then deposited.

The oldest layer here is B followed by the intrusion A and successful deposition of C, D and E in that order.

8 0

2 years ago

What are the three patterns of human movement in the Pacific Islands today?

Molodets [167]

<h2>Answer</h2>

<h3>This paper traces the history of human-environment interactions in the Pacific Islands during the last millennium, focusing on three main periods: the Little Climatic Optimum, the Little Ice Age, and, in greatest detail, the transition around A.D. 1300 between the two. The Little Climatic Optimum (approximately A.D. 750–1300) was marked by warm, rising temperatures, rising sea level and probably increasing aridity. The latter condition was linked to development of water-conservatory strategies (agricultural terracing being the most common) requiring cooperation between human groups which facilitated formation of large nucleated settlements and increased sociopolitical complexity. The transition period (approximately A.D. 1270–1475) involved rapid temperature and sea-level fall, perhaps a short-lived precipitation increase. Temperature fall stressed crops and reef organisms, sea-level fall lowered water tables and exposed reef surfaces reducing their potential as food resources for coastal dwellers. Increased precipitation washed away exposed infrastructure. Consequently food resource bases on many islands diminished abruptly across the transition. The Little Ice Age (approximately A.D. 1300–1800) was marked by cooler temperatures and lower sea levels. The lingering effects of the earlier transition largely determined human lifestyles during this period. Conflict resulted from resource depletion. Unprotected coastal settlements were abandoned in favour of fortified inland, often upland, settlements. Climate change is suggested to have been a important determinant of human cultural change during the last millennium in the Pacific Islands.</h3>

<h2>Journal Information</h2>

<h3>Environment and History is an interdisciplinary journal which aims to bring scholars in the humanities and biological sciences closer together, with the deliberate intention of constructing long and well-founded perspectives on present day environmental problems.</h3>

<h2 />

<h2>Rights & Usage</h2>

<h3>This item is part of a JSTOR Collection. </h3><h3>For terms and use, please refer to our Terms and Conditions </h3><h3>Environment and History © 2001 White Horse Press </h3><h3>Request Permissions</h3>

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8 0

2 years ago

Read 2 more answers

PLEASE HELP IM ON THE QUIZ

dimaraw [331]

C. Having a low standard of living

6 0

2 years ago

Read 2 more answers

ach of the letters on the map above marks a body of water in Southeast Asia. Which two letters represent gulfs

agasfer [191]

(A) A and B are the two letters that represent gulfs.

<h3>What are gulfs?</h3>

A gulf is a large inlet from the ocean into the continent, usually having a narrower opening than a bay, however, this is not always the case in all geographical places thus named.
The term gulf was traditionally applied to huge, indented areas of saline water surrounded by a coastline.
Many gulfs, including the Persian Gulf, Gulf of Mexico, Gulf of Finland, and the Gulf of Aden, are important shipping lanes.
The United States Gulf Coast, often known as the Gulf South, is the coastline that runs along the southern United States where it meets the Gulf of Mexico.

Therefore, (A) A and B are the two letters that represent gulfs.

Know more about Gulfs here:

brainly.com/question/24440283

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Complete question:

Each of the letters on the map above marks a body of water in Southeast Asia. Which two letters represent gulfs?

A. A and B

B. B and C

C. C and D

D. A and C