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goldfiish [28.3K]
3 years ago
11

The plant cell wall

Biology
1 answer:
KonstantinChe [14]3 years ago
4 0

B. is a protective structure made of cellulose fibrils

<h2><u>Mark as Brainliest</u></h2>
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The La Brea Tar Pits in Los Angeles are the site of millions of fossils from the ice age. Woolly mammoths, giant sloths, dragonf
TiliK225 [7]

Answer:

Scientists learn how climatic changes during the ice age affected life in this region by analyzing specimens found in these tar pits  

Explanation:

La Brea Tar Pits are a group of tar pits in Los Angeles. Many preserved remains of ancient organisms (i.e., fossils) were extracted from the tar, including, among others, Western horses, prehistoric camels, three-toed tapirs, rodent bones, insects, mollusks, wood, plants, etc. The oldest fossils have been dated to be approximately 38,000 years ago by radiometric techniques. Moreover, the Last Glacial Period was the most recent glacial period within the Quaternary glaciation, which encompassed the period between 115,000 to 10,000 years ago. This period (LGP) encompassed the Last Glacial Maximum (LGM), which occurred about 20,000 years ago. In consequence, many of the fossils found in La Brea Tar Pits evidence how the ice age affected life in this region. Moreover, many of the fossil species extracted from the tar are still present today, thereby indicating how these species adapted to fluctuating climatic conditions, whereas certain species couldn't adapt fast enough as the environment changed and therefore they went extinct.

5 0
3 years ago
Which statement explains why earthquakes tend to be deeper near subduction zones?
ICE Princess25 [194]

Answer:

Option C, At a subduction zone, oceanic crust is forced deep into the Earth.

Explanation:

At sub-duction zone, the dense oceanic plates coincides with the less dense continental plates and thus sink below the continental plates. Sometimes these oceanic plates being dense, sink to greater depth with in the earth’s mantle. The sub-duction zone causes  earth quakes of high intensity when oceanic crust penetrates to greater depths of earth crust as they tend to change the rheology of the earths’ mantle and also causes bending of plates

Hence, option C is correct

5 0
3 years ago
Can you identify the supergroups to which these protists belong?
uranmaximum [27]

Protists and Supergroups

Diatoms – SAR - Stramenopila

Foraminiferans – SAR  - Rhizaria

Plasmodial slime molds - Unikonta  - Amoebazoans

Trichomonas vaginalis - Excavata - Parabasalids

Giardia intestinalis - Excavata - Diplomonads

Dinoflagellates - SAR -  Alveolata

Green algae - Archaeplastida- Chlorophytes

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.

5 0
3 years ago
Ekkk!!! please help me with this
dimulka [17.4K]
It’s true. Stems are organs that hold the trees and plants up and also produces the leaves and secondary stems
8 0
3 years ago
Read 2 more answers
Which of the following us as a direct result of the destruction of habitat associated with the building of transportation facili
svet-max [94.6K]

Answer:

Decreased biodiversity

Explanation:

Highway construction or lessening surface grades for port and airport developments have led to an important loss of fertile land. 

5 0
2 years ago
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