<u>Coquina</u> is the sedimentary rock is made up of pieces of shells.
Two types of sedimentary rock: Clastic and chemical sedimentary rocks
Explanation:
Coquina is the sedimentary rock formed by fragments or pieces of shells of marine animals like mollusks, brachiopods, trilobites and certain invertebrates.
The shells of marine animals are fragmented due to abrasion and mechanical degradation and sorting by the wave action and chemicals present in the sea water and gets transported which then sediments to form rock structures called coquina. The shells mostly contain calcium carbonate.
Chalk is the sedimentary rock formed b the fossil shells fragmented from foraminifers. This is a more powdery type of limestone.
Depending upon the type of sedimentation, sedimentary rocks are of three types:
Clastic – Made from sedimentation of clastic (pieces from broken rocks) through the processes of mechanical weathering and lithification (cementing and compacting). sandstone, conglomerate
Chemical – Made from evaporation of water and precipitation of materials which were previously dissolved in a solution. Example: Rock salt, dolomite
Organic – Repeated accumulation and sedimentation of organic matter or remains from plant and animal sources like bones (calcium deposits). Example: coal.
Humans belong to a category of intelligent primates.
<h3>What are primates?</h3>
Primates refers to a group of animals that have the ability of high levels of cognition. These group of animals can manufacture their own tools and use them to get foods and for social displays. Some have several strategies to hunt their prey , they have greater influence and rank; they are status conscious. They can receive and also manipulate. They recognise kin.
Therefore, Humans belong to a category of intelligent primates.
Learn more about primate below.
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Answer:
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Explanation:
19) I think the cell is eukaryotic because of it's shape
20) Prophase (added an image with more information)
21) There are 12 chromatids and 6 chromosomes present (chromatids are 1 of the of two identical halves of a replicated chromosome)
22) I think there will be 3 chromones present in each of the new cells after the cell divides (because it separates equally and half of 6 is 3)
Answer:
Memory cells remain ready to respond to a subsequent encounter with a pathogen quickly and efficiently. This so-called secondary response is always stronger than the primary infectious response
-i hope this helps sorry if its wrong
Explanation:
