Carbon film fossil is the type of fossil that preserves delicate details of an organism after pressure squeezes out liquids and gases.
Carbon film fossil is a type of fossil that is mainly composed of carbon and can preserve delicate details of organism’s (animal and plants) parts. The formation of carbon film fossil starts when a dead organism is buried under sediments. After some time, the organism will begin to decay in a process known as carbonization. Pressure will squeeze out liquids and gases from the dead organism, leaving behind a layer of carbon. Carbon film fossils usually appear black or brown in colour.
Invertebrate doesn't posses "Backbone" whereas Vertebrate chordate have that. That's the only & most important difference between them.
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Answer:
Avirulent.
Explanation:
VIRULENCE is the ability of a pathogenic organism to infects the host, leading to damages or death of the host. The extent of these virulent effect depends on certain chemical substances ( called Virulence factors) produced during the pathogenic processes.
The virulence effects is achieved due to the ability of the virulent factor to disrupt the entire physiological mechanisms of the organisms; e,g crop plants; though suppression of the host immune response, disruptions of the immune mechanisms, colonization of the host DNA structure etc. Therefore the pathogenic effects suppressed the host resistance and spread throughout the host body system.
In this present scenario, the pathogenic effect of the likable bacteria; is not virulent, because
none of the d crop pant is completely diseased.
the nascent intenodes and leaves are growing to usual size.
Consequently, the physiological and the morphological features of the crop plants are still intact. Thus the infection is AVIRULENT.
I believe that the answer is B. a fertilized egg splits in two but I could be wrong
