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Which physical elements contributed to the great amount of available energy on the primitive earth at the time of the origin of life?
3.5 billion years since the water cycle was faster than today, resulting in hard storms with intense electrical discharges. There was as well no chemical protection from the ozone layer against ultraviolet radiation. Temperatures in an atmosphere and on the planet surface were very high. Electricity, radiation and heat constituted large available energy sources.
TYPES OF SPERM Mainly two types . (1) Flagellated Sperm - Generally all sperm are monoflagelated, but in todfish or opsonus sperm is biflagelated. (2) Non flagellated spe
Photometer Photometer (Figure shown below) measures the intensity of light. The metallic plate A is a photocell which emits electrons from its surface when light of sufficient
Q. What are the main human diseases caused by fungi? The major human diseases caused by fungi in immunocompetent patients are , blastomycosis, histoplasmosis, paracoccidioidomy
Q. What is the hormone secreted by the growing ovarian follicles? What is the action of that hormone upon the uterus? The follicles that are growing after menses secrete estrog
Reed-Swamp Stage - Hydrarch This stage is also known as amphibious stage, as the plants of the community are rooted but most parts of their shoots remain exposed to air. Speci
What are the grasslands of North America and of South America respectively called? The steppe the grasslands of North America are called as prairies . The grasslands of South
Question : Explain the main steps in the mongoose bioassay and the mouse bioassay as conducted for testing ciguatera in Mauritius? (i) Provide a brief description on the beh
What are the three categories in which food protein sources can be divided into Protein food sources can be separated into the following three categories: Proteins of pl
why is obelia considered to of special interest in Zoology as an animal showing an intermediate grade of organisation?
Q. Define Radiological anatomy? The borders of the mediastinum on the CXR are defined by the contrast produced by adjacent air filled lung. Postero-Anterior View It in
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