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sedimentary rocks

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What protists is closley related to chalk?

Coccolithophores are a group of single-celled algae that produce chalk-like plates made of calcium carbonate called coccoliths. They are closely related to chalk because their calcium carbonate exoskeletons can accumulate and form chalk-like deposits in the ocean.


Where does algae grow and developed?

rocks, limestone, animals, ice, trees, water, springs, soil, trees


What is Cretaceous Limestone?

Cretaceous limestone is a type of sedimentary rock formed during the Cretaceous period, approximately 145 to 66 million years ago. It is made up of predominantly calcium carbonate minerals derived from the remains of marine organisms such as corals, shells, and algae. Cretaceous limestone is often used as a building material and in the production of cement.


Which sedimentary rock is the only stone formed by living animals?

Limestone is the sedimentary rock formed primarily from the accumulation of shell, coral, algal, and fecal debris produced by living organisms like mollusks, corals, and algae. It is the only rock primarily formed by living animals.


What is a five letter word ending in A meaning freshwater limestone algae?

The word you are looking for is chara.It's five letters, ending in A.Chara is an algae which forms in freshwater lakes in limestone-heavy environments.


What are the rocks and minerals in Glacier National Park?

The National Park Service says that there is quartzite, argillite, limestone, and dolomite. Stromatolites (fossils of blue green algae) are also there. The Mountain Beltway site has some great pictures of the rocks.


Why do snails eat chalk?

I have never heard of water snails eating chalk, i just go to the pet store and get some algae wafers


What life forms formed the earliest fossils?

Single-celled prokaryotes that are preserved in stromatolites. Stromatolites are ancient laminated rocks formed by the growth of cyanobacteria; basically they are rock-like buildups of microbial mats that form in limestone-forming environments. In combination with oncoids, stromatolites are formed by the baffling, trapping, and precipitation of particles by communities of microorganisms like cyanobacteria or red algae, etc. So in answer to your question, the oldest fossils are stromatolites, and the life forms that created those "fossils" were prokaryotic bacteria and algae like cyanobacteria.


Is chalk man made or natural?

Chalk is a natural mineral formed from the remains of marine organisms such as plankton and algae. It is composed mostly of calcium carbonate.


What are the two sources of calcium carbonate found in limestone?

The two main sources of calcium carbonate found in limestone are the remains of marine organisms such as shells, corals, and algae, and chemical precipitation from bodies of water. Over time, these sources accumulate and solidify to form limestone rock.


What does algae provide animals with?

Algae provides food for some animals. For others, it can provide shelter.


What type of landforms were in the cretaceous time period?

There was a lot of chalk because a large area of the continents was covered by warm shallow seas, as a result of that there was a lot of marine limestone. You can also find chalk with many types of algae that flourished during the cretaceous period. An example of a landform would be the white cliffs of dover. There are also landforms in Sussex, the isle of Wright and East Dorset