Answer:
Animals, fungi, plants, even bacteria can be considered fossils. Two features that classify an archaeoptericus as a reptile would be its long bony tale and a full set of teeth. Comparing to a bird, this creatures exhibits long feathered wings and claws.
Many rickettsia are PATHOGENS.
Pathogens are micro organism that cause diseases and rickettsia are majorly disease causing organisms. They are rod shaped bacteria and most species are gram negative. They are natural parasite of some arthropods and they cause diseases in both humans and animals.
Answer:
The number of protons in the nucleus of an atom is equal to the atomic number
the number of electrons in a neutral atom is equal to the number of protons
Explanation:
Answer:
(a) Simple reflex action response to external stimuli while Condition reflex action deals with learned or modified patterns of behaviour gained through experience. (b) Simple reflex action same in all members of a species while Condition reflex action different in members of a species.
Explanation:
Answer:
D.)
Explanation:
(I know this, by experience :|)
