1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vikki [24]
3 years ago
12

Mechanical weathering can be caused by _________. Select all that apply. A. gravity B. acid rain C. freezing and thawing in the

absence of water D. freezing and thawing in the presence of water User: Which of the following can be an organic cause of chemical weathering? A. loess B. lichen C. freezing D. expansion
Biology
2 answers:
bekas [8.4K]3 years ago
6 0
The answer to the first question is D. but I'm not sure about the second question
Zepler [3.9K]3 years ago
4 0

Answer:

1- Option (A), (B) and (D)

2- Option (B)

Explanation:

Freeze and thaw is one of the mechanical weathering process that usually takes place in a colder type of environment. When the rocks in this region are comprised of fractures, then the water seeps into these fractures and at night due to the lowering of temperature, the water in these fractures gets freeze. Due to this freezing, the water expands and exerts a force on the side of these fractures that breaks the rock apart. This type of weathering process is known as the freeze and thaw method. In addition to this, gravity and acid rain also drives the mechanical weathering process. As the water flows from a higher region to a lower region, it erodes some of the materials with it that ultimately causes weathering and erosion. Acid rain is comprised of acids and when they precipitate, the minerals and the acid water reacts. As a result of which the rock weathers.  

The type of weathering in which the roots of plants or trees such as lichens, grow within the spaces (fractures) of the big boulders in the soils, then these trees or plants over a due course of time, breaks the boulders apart.

Hence, the correct answers are given above.

You might be interested in
I need help anybody plz help
tino4ka555 [31]
1. I<span>f immigration and emigration numbers remain equal, decreased birth rate could cause a slowed growth rate. Decreased means that something is getting lower, so I guess that means that growth rate is also being slower than usual.
3. A</span><span>s resources in a population become less available the population reaches carrying capacity. Carrying capacity has to do with the total number of entities in a population.
4. W</span><span>hen the exponential phase of logistic growth curve of a population ceases, population growth begins to slow down. When something ceases, it stops, which means that other processes also stop or become slower.
5. The most likely reason that a population of mice in a farming area suddenly increases is that more food is available as grain is harvested. This means that there is more food for mice as well, which is why they tend to settle in these areas. </span>
4 0
3 years ago
Read 2 more answers
When hot, many mammals sweat to control their body temperature. evaporation contributes to temperature moderation, but mammals'
SVETLANKA909090 [29]
The absorption of heat by the breaking of hydrogen bonds, think homeostasis or h<span>ypothalamus.</span>
7 0
3 years ago
Read 2 more answers
The oxygen formed in the chemical reaction of photosynthesis is called a(n)
love history [14]

Answer:

oxígeno como subproducto.

Explanation:

6 0
3 years ago
Which characteristics do all bony and jawless fish have in common? Check all that apply.
Alla [95]

Answer:

It's Gills because there not human and use gills to breathe in water

5 0
3 years ago
Read 2 more answers
Why is behavior considered to be a mixture of both nature and nurture?
Ainat [17]

Answer:

behavior is considered the result of an interaction of genes and environment. For example, the development of intelligence depends on both the genetic influences on the brain and the environmental influences that affect learning in the child. Nature and nurture work together in behavior

Explanation:

3 0
2 years ago
Other questions:
  • Chains of nucleotides from?
    7·1 answer
  • Select all the correct answers.
    5·1 answer
  • Can there be a bias in a secondary source
    11·2 answers
  • The moon has a bigger influence on our oceans than the sun because
    10·1 answer
  • 100 POINTS
    10·1 answer
  • C. Which specific biomolecule (lipid, protein, nucleic acid, carbohydrate) is each food mostly made of?​
    11·1 answer
  • What is the purpose of a testcross?
    10·1 answer
  • Suggest why the lynx populations appear to be so dependent on the fluctuations on the hare
    10·1 answer
  • which genetic codon of hemoglobin beta gene is mutated and what that mutation is? as in case of mutation in 7th genetic codon of
    6·1 answer
  • What percentage of the hydrosphere exists as salt water.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!