These multicellular plants all have something in common, other than being autotrophic. unlike moss and liverworts, they can grow to great heights and survive in diverse environments. this is because there is a system for intercellular communication, that moves substances throughout the plant; water and nutrients up from the ground and glucose from photosynthetic tissue to all parts of the plant. what is responsible for this intercellular interaction in higher plants?

a) hormones
b) plasmodesmata
c) xylem and phloem
d) meristematic cells

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

Explain the significance of thesaurus geographicus

Reactants undergo chemical reaction to form products. this chemical equation represents one such reaction. the coefficient for one of the reactants or products is incorrect. which part of the chemical equation is incorrect?