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3 years ago

Which is a common characteristic of extrusive igneous rock

2 answers:

7 0

They are found on the surface of the earth

They have small crystal

<span>Formed from cooling and solidification of lava

https://www.kenyaplex.com/questions/11837-state-three-characteristics-of-extrusive-igneous-rocks.asp...

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sp2606 [1]3 years ago

4 0

Igneous rocks which formed by the crystallization of magma at the surface of the Earth called extrusive rocks. They are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

So a common characteristic would be crystallization.

I hope that helped you.

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Explanation:

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3 years ago

Can you identify the supergroups to which these protists belong?

uranmaximum [27]

Protists and Supergroups

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Brown algae - SAR-Stramenopila

Explanation:

Protists are the simplest eukaryotes. Due to their vast diversity of species, they are broadly divided into four supergroups or the clades. They are the Archaeplastida, Excavata, SAR clade, and Unikonta.

Archaeplastida: Interrelated with DNA sequence, cell structure, and endosymbiotic relationships. Divided into red algae, chlorophytes, charophyceans, and the plants. Eg, red algae, green algae, plants.

Excavata: Protists with cytoskeletal features like excavated grooves. This clade includes diplomonads, parabasalids, euglenozoans. Eg., Trichomonas and Giardia species

SAR: Protists interrelated with their DNA sequences and endosymbiotic relationships. Further divided into alveolata, stramenopila, and rhizaria. Eg., diatoms, dinoflagellates

Unikonta: Protists with flagella like structures, pseudopodia, genes fused together. Divided into amoebozoans and opisthokonts. These include slime molds, fungi, entamoebas, animals etc.

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3 years ago