The adaptive advantage associated with the filamentous nature of fungal mycelia is primarily related to
a) the ability to form haustoria and parasitize other organisms.
b) avoiding sexual reproduction until the environment changes.
c) the potential to inhabit almost all terrestrial habitats.
d) the increased probability of contact between different mating types.
e) an extensive surface area well suited for invasive growth and absorptive nutrition.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this