The dense needles of Douglas fir trees can prevent most light from reaching the forest
floor. This situation would have an immediate
effect on ?

Efficiency is the percent of work put into a machine by the user (input work) that becomes work done by the machine (output work)

Which best describes how the common cold spreads in the human body? a bacteria burst out of normal cells killing them b viruses replicate inside respiratory cells c bacteria inject dna into normal cells d viruses insert dna into bacteria

Support mangrove trees out of the water. a) pneumatophores b) prop roots c) sand dunes d) tide supports