.

2021-08-13 09:17:12 Comparison Between Sigma And Pi Bond :

Sigma Bond

1. Formed by axial overlapping
2. Involves s-s, s-p, p-p (axial) & hybrid orbitals
3. Extent of overlapping is more so stronger
4. Free rotation around s bond is possible
5. Hybridized or unhybridized orbital forms s bond
6. Independent existence of s-bond.

Pi Bond

1. Formed by side by side overlapping
2. Involve p-p, p-d & d-d orbital
3. Extent of overlapping is less so weaker
4. Free rotation around p bond is not possible
5. Hybridized orbital never forms pi bond
6. No independent existence.

Must Read Open / Comment

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2021-08-10 11:54:43 Ecology

Population Interaction

𝐈𝐧𝐭𝐞𝐫𝐚𝐜𝐭𝐢𝐨𝐧 𝐒𝐩𝐞𝐜𝐢𝐞𝐬 𝟏 𝐒𝐩𝐞𝐜𝐢𝐞𝐬 𝟐
Mutualism + +

Competition _ _

Predation + _

Parasitism + _

Commensalism + 0

Amensalism _ 0



FOR MORE JOIN
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2021-08-08 17:16:28 Vitamins_Deficiency



1- Vitamin “A”: Night blindness

2- Vitamin “B1”: Beriberi

3- Vitamin “B2”: Ariboflavinosis

4- Vitamin “B3”: Pellagra

5- Vitamin “B5”: Parestheia

6- Vitamin “B6”: Anemia

7- Vitamin “B7”: Dermititis and enteritis

8- Vitamin “B9” - “B12”: Megaloblastic anemia

9- Vitamin “B17”: Cancer

10- Vitamin “C”: Scurvy and swelling of gums

11- Vitamin “D”: Rickets and Osteomalacia

12- Vitamin “E”: less fertility

13- Vitamin “K”: Non-Clotting of blood Open / Comment

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2021-08-06 13:51:05 𝚂𝚘𝚖𝚎 𝙸𝚖𝚙𝚘𝚛𝚝𝚊𝚗𝚝 𝙲𝚘𝚗𝚗𝚎𝚌𝚝𝚒𝚗𝚐 𝚕𝚒𝚗𝚔𝚜 𝚋𝚎𝚝𝚠𝚎𝚎𝚗 𝙶𝚛𝚘𝚞𝚙𝚜 : ---


1. Bacteria & Fungi
Actinomycetes

2. Reptiles & Birds
Archaeopteryx

3. Chordates & Non-chordates
Balanoglossus

4. Cartilaginous & Bony fishes
Chimera (Rabbit fish/Ratfish)

5. Bryophytes & Pteridophytes
Club moss

6. Coelenterates & Platyhelminthes
Ctenophora

7. Pteridophytes & Gymnosperms
Cycas

8. Reptiles & Mammals
Echidna (Spiny ant eater)

9. Animals & Plants
Euglena

10. Gymnosperms & Angiosperms
Gnetum

11. Protista & Bryophytes
Hornworts

12. Pisces & Amphibia
Latimeria

13. Protista & Fungi
Myxomycetes

14. Annelida & Mollusca
Neopilina

15. Reptiles & Mammals
Ornithorhynchus (Duck billed platypus)

16. Annelida & Arthropoda
Peripatus (walking worm)

17. Protozoa & Porifera
Proterospongia

18. Bony fishes & Amphibia
Protopterus (Lung fishes)

19. Virus & Bacteria
Rickettsia

20. Amphibia & Reptiles
Seymouria

21. Amphibia & Reptilia
Sphenodon (Living fossil lizard)

22. Echinodermata & Chordata
Tornaria larva

23. Annelida & Mollusca
Trochophore larva

24. Living & non-living
Virus

25. Protozoa & Metazoa
Xenoturbella Open / Comment

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