Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Biology

Which of the following may display two different grain sizes? a. metamorphic rock c. igneous rock b. sedimentary rock d. magma


Answer:

b. sedimentary rock

c. igneous rock

Sedimentary and igneous rocks may display two different pore size. According to a rough estimate the grain size of Sedimentary rocks is 5mm and grain size of igneous rock is 2mm.


Related Questions

Posted in Biology

Select the best description for each cycle: 1.Hydrologic A. photosynthesis and respiration 2.Rock B. erosion, deposition, metamorphism 3.Tectonic C. housed mostly in rock material 4.Carbon D. it's all about water 5.Nitrogen E. subduction, uplift, and mantle convection 6.Phosphorus F. it's all about special bacteria

The right matches are:

1.Hydrologic is matched with D. it's all about water

Hydrology is the science of the earth which is interested in the terrestrial branch of the water cycle, that is to say in the exchanges between the atmosphere, the terrestrial surface and its subsoil. We speak of hydrosphere to designate the part of the planet in which water is located.


2.Rock is matched with B. erosion, deposition, metamorphism

Rocks are natural materials generally solid and formed, essentially or entirely, by an assemblage of minerals, sometimes including fossils (especially in sedimentary rocks), glass resulting from the rapid cooling of a liquid (volcanism, friction .. .) or aggregates of other rocks. The rocks can be formed of a single mineral species (monomeral rocks) or of several (polymineral rocks):


3.Tectonic is matched with E. subduction, uplift, and mantle convection

Tectonics is the study of geological structures of kilometric scale and more, such as mountain ranges or sedimentary basins, and mechanisms that are responsible. This discipline is directly related to plate tectonics.

The lithosphere, the rigid outer shell of the Earth consisting of the crust and part of the upper mantle, is subdivided into plates, called tectonic or lithospheric plates.


4.Carbon is matched with A. photosynthesis and respiration

The 2 main carbon "reservoirs" most directly involved in this cycle are the atmospheric CO2 and the carbon constitutfs of living beings. During photosynthesis, CO2 and water combine (reduction reaction) under the effect of light energy (sun) to form carbohydrates.

Then, in all organisms, these carbohydrates are oxidized to reform water and CO2 during breathing. Part of the energy contained in carbohydrates is converted into ATP. Up to 35% of the CO2 fixed during photosynthesis is released during leaf respiration.


5.Nitrogen is matched with F. it's all about special bacteria

Special bacteria pick up nitrogen and release it in a form that can be assimilated by the plant

To be absorbed by the plant, the nitrogen present in the atmosphere in N2 form must undergo biological transformation processes carried out by microorganisms called nitrogen-fixing bacteria. These nitrogen-fixing bacteria have the main function of capturing the nitrogen present in the air, but also in the soil (thus limiting the losses in the aquifers), and to return it to the plant in an available and assimilable form. Nitrogen in soil is in NO3- form (soil nitrate) and nitrogen in air is in N2 form (atmospheric nitrogen).


6.Phosphorus is matched with C. housed mostly in rock material

Global phosphate mineral resources are estimated at more than 300 billion tonnes in 2014 (US Geological Survey). The largest sedimentary deposits are found in North Africa (Morocco), China, the Middle East and the United States. The exploited phosphorus deposits come mainly from sedimentary or marine deposits, but also magmatic deposits or guano from exotic marine birds.


Posted in Biology

The slowest type of mass movement, which involves the lifting and contracting of soil particles over time, is called a.) a rockslide b.) an earthquake c.) creep d.) rockfall

HI there

i believe the answer is creep creep takes a long time to do its job so i believe this is your answer

hope this helped you!

Posted in Biology

Rocks are weathered by

The answer is wind and water

Posted in Biology

Unlike rocks, all minerals ________ and ________. A are expensive, are difficult to get B occur naturally, have a fixed chemical composition C contain metal, dissolve in acid D fracture, contain silica

The correct answer is B!

Why is this?

A mineral is a naturally occurring, inorganic solid with a definite crystalline structure and chemical composition. All minerals contain one or more elements, which are pure substances that cannot be broken down into simpler substances by chemical means.

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Biology

The rock cycle is not important to living organisms. Please select the best answer from the choices provided T F The rock cycle is not important to living organisms. This is false.

The given statement is False.

The rock cycle is equally important to the plants, animals and human beings. Rocks, soil and minerals are very important for the plants as it gives life to other organisms on earth. Humans beings are also dependent of rocks for many of its essential purposes. Animals also use cave made of rocks as a source of shelter.

Thus, rock cycle is equally important to living organism.

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Biology

A sedimentary rock containing a fern fossil has been found. What does this tell you about the area at the time the rock was formed A the area was cold B the area was hot C the area was on land D the area was covered by an ocean

The fern is a vascular plant that reproduces by producing spores. This plant produces no fruits or seeds. The ferns have complex leaves, and have true stems and roots. The presence of a fern fossil in a sedimentary rock indicates that the rock present on the land. The fern plants are found above the land, and this rock must have been present there for it to contain the fern fossil.

Hence, The correct answer is 'Option C - the area was on land'.

Posted in Biology

Rock made of shells and coral cemented together

A Sedimentary rock consisting of loosely-consolidated fragments of shells and /or coral.

Posted in Biology

Which best describes the life cycles of moss and angiosperm? I. Both life cycles have protected seeds. II. Both life cycles involve meiosis. III. Moss fertilization occurs in the air; angiosperm fertilization occurs in a pool of water. IV. Moss release haploid spores into the surrounding environment; angiosperm release haploid pollen grains into the surrounding environment.

Ans. Option (IV).

Mosses can be defined as non-vascular, flowerless plants that are found in shady or damp regions and reproduce via haploid spores. During reproduction in moss, haploid male gametes or spores are released into surrounding environment that fuse with female spores to form zygote that develop into mature sporophyte.

Angiosperms are vascular, flowering plants that reproduce by seeds. During reproduction in angiosperms, haploid male gametes or pollen grains are released into surrounding environment that fuse with female gametes or eggs to form zygote that develop into seed.

Thus, the correct answer is option (IV).

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Biology

Any time stress causes rocks to change, ____________ is the result. a. tension c. compression b. folding d. deformation

The correct answer is D- Deformation.                  

Stress is a force applied to any object.

When a stress is applied to any rock or when a rock undergoes any form of stress, it deforms. The deformation can occur in the shape of the rock or the volume of the rock.                                    

Posted in Biology

A clastic rock is named according to what ?

Clastic rocks are composed of fragments, or clasts, of pre-existing minerals and rock. A clast is a fragment of geological detritus,[1] chunks and smaller grains of rock broken off other rocks by physical weathering.[2] Geologists use the term clastic with reference to sedimentary rocks as well as to particles in sediment transport whether in suspension or as bed load, and in sediment deposits.

Posted in Biology

Why the inner planets are dense and rocky while the outer planets have low densities with no solid surfaces

The Inner Planets dense and rocky because they are close enough to the sun that the heat has driven off the free hydrogen and helium which forms most of the Gas Giant planets (and most of the universe). Only the heavier elements remain.

And please put the questions in right subject. It belongs to "Physics" not for "Biology". 

Hope this helps!

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Biology

What is the purpose of the biogeochemical cycles? A.to cycle energy through a food chain B.to recycle matter through the biosphere C.to recycle rocks through the layers of Earth D.to cycle nutrients through the human body

The best and most correct answer among the choices provided by your question is the first choice or letter A.

The purpose of the biogeochemical cycles is to cycle energy through a food chain.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

Posted in Biology

A scientist found a hominid fossil that appeared anatomically to be that of Homo habilis. It was found, however, in a rock layer that suggests it is only about 150,000 years old. Based on this, he wants to publish a paper asserting the fossil shows that Homo habilis lived much longer than thought and was contemporary with early Homo sapiens. Which of the following should he do to build a stronger case before he publishes? (2 points) Convince other scientists to support his conclusions about the fossil. Look for evidence of cave paintings at the site where he found the fossil. Find out how old the fossil actually is using radioactive dating. Look for similar fossils in the same rock strata.

The correct answer is C. Find out how old the fossil actually is using radioactive dating.

Explanation:

A fossil refers to remains or evidence of the existence of a specific species in the past and that help scientist known the species that lived during a certain geological period. Additionally, one of the most common methods to determine how old a fossil is the use of rock layers that compares previous fossils and  the layer in which they were found to new fossils, this is the case of the scientist that found a fossil that seems to belong to a Homo habilis and suggest this species lived longer than thought.

However, as the age of this fossil has been determined only based on rock layers to build a stronger case the scientist will need to corroborate the age of the fossil using other methods as rock layers can be imprecise this includes methods such as the radioactive dating that uses the radioactive isotopes to find the age of rocks or fossils and in some cases is more precise than other methods. Therefore, the step this scientist should follow it to find out how old the fossil actually is using radioactive dating.

Posted in Biology

Which statement is an accurate description of the relationship of rocks and minerals? A. All minerals are made of rocks. B. Geologically, minerals and rocks are exactly the same. C. Knowing which minerals are in a rock can help you identify and classify that rock. D. Almost all rocks are made of three or more minerals.

The statement that is an accurate description of the relationship of rocks and minerals is "Almost all rocks are made of three or more minerals", the answer is letter D. Rocks are made of minerals. Only a few minerals are rock forming and most rock is made from a mixture of the commonest of these such as feldspars, quartz and so on.

 

Posted in Biology

A geologist finds a layer of rock that is made of coarse-grained foliated particles arranged into bands and splits into sheets when struck with a hammer. What type of rock did the geologist find? A. marble B. gneiss C. quartzite D. slate

Answer:

Option (B)

Explanation:

Gneiss is a metamorphic rock which forms due to the extremely high pressure and temperature condition. It is characterized by the coarse and medium-sized grains and there is the presence of alternating dark and light-colored bands on it. The light color band contains felsic minerals such as feldspar, quartz and the dark band contains mafic minerals such as biotite, hornblende, garnet. It is a very high-grade metamorphic rock. These characteristics helps in identifying a gneissic rock.

Thus, the geologist found a gneissic rock.

Hence, the correct answer is option (B).

Posted in Biology

A microscopic view of mildew fungus displays thin, threadlike filaments, which take nutrients from the host cell. What are these filaments called?

The choices can be found elsewhere and are as follows:

a. mycelia 
b.hyphae 
c. spores

I think the correct answer is option B. These filaments are called hyphae. It is a long, branching filamentous structure of a fungus, oomycete, or actinobacterium. Hope this answers the question.

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements

Posted in Biology

Imagine a population of rabbits with fur color that ranges from black to white. If this population were put in an area that has dark rocks that camouflage the black rabbits, as well as light stones that hide the white rabbits, what would most likely happen to the gray rabbits? Gray rabbits would blend into either environment. Gray rabbits would adapt to have black fur. Gray rabbits would be eliminated by predators. Gray rabbits would mutate to white fur.

The correct answer is option (C) Gray rabbits would be eliminated by predators.

Camouflage is an adaptation by organisms allowing them to blend with the environment. This helps them in surviving or escaping from their predators. It can be throught coloration or developing a particular pattern or mimicry.

The example given above is a type of camouflage through concealing coloration. Concealing coloration includes having a fixed camouflage and changing the camouflage depending on the environment. Grey rabbits cannot exhibit camouflage as the backgroud is dark rocks and light stones. As a result, these rabbits are clearly visible to the predators and get elimiated by them.



Posted in Biology

Which materials are included in the hydrosphere that are not in liquid form? A. rainforests and lakes B. glaciers and polar ice caps C. rocks and minerals D. lakes and rivers

The materials that are included in the hydrosphere that are not in liquid form are glaciers and polar ice caps. The answer is letter B. Rocks and minerals and rainforests belongs to the lithosphere while lakes and rivers belongs to the hydrosphere which is liquid in form.

Use our writing service to score better and meet your deadlines

No matter what kind of academic paper you need, it is simple and secure to hire a writer for a price you can afford at StudyHawks. Save more time for yourself.

Tell us your requirements