Why do trees communicate through interconnecting root fungus?

Explanation:

Scientists call these mycorrhizal networks. The fine, hairlike root tips of trees join together with microscopic fungal filaments to form the basic links of the network, which appears to operate as a symbiotic relationship between trees and fungi, or perhaps an economic exchange.

The tree then exchanges these offerings from the fungi for a sugar-like substance the tree makes during photosynthesis. ... They do this by sending chemical, hormonal and electrical signals. Not only do they communicate underground, they send pheromones and other scent signals through the air.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.