Answer:
Nitrogen
Explanation:
Nitrogen is the most abundant element in our atmosphere and 7th most abundant in the universe. It is vital in the formation of nitrogenous bases which are the key bonds that form nucleic acids such RNA and DNA.
A. direct B. indirect C. direct D. indirect
Competition occurs by direct and indirect means. Organisms interact directly by fighting (aggression) for scarce resources. Two eagles fighting over the salmon carcass and two colonies of ant clashing over a wasp are samples of aggression (direct competition)
Indirect competition happens when there is a common or limited <span>supply of at least one resource (food, water, and territory). </span>Use of this resource lessens and later depletes the amount available to others, or they compete for space.<span> Gray foxes preying on penguins and squirrels relying on nuts for food are samples of indirect competition.</span>
Greenhouse gases are REALLY bad for the environment and one of the major cause of global warming. Greehouse gases can stay lasting in the air for 20 to 200 years.
The "control" step of intergrated pest management involves the use of pesticides to control pests and their damage.
<u>Explanation:</u>
IPM have four steps, which is a sequence of pest control method. When the thresholds for surveillance, detection and intervention suggest the need for pest control and prevention measures are no longer efficient or usable, then IPM (intergrated pest management) initiatives determine the appropriate management system for both efficacy and risk.
Efficient, less dangerous pest controls, involving highly concentrated chemicals like pheromones to hinder pest mating or mechanical control like trapping or weeding, are selected first. If more analysis, detection and intervention thresholds suggest that less dangerous controls do not operate, then alternative pest control approaches, like targeted pesticide spraying, will be implemented.
