13. Disposal of waste is one of the major concerns which is affecting the environment. Which of the following methods can be used to effectively dispose of waste materials? A burning waste materials В. disposing waste into oceans and seas с dumping and storing waste in containers D recycling​

Nathan is an ecologist. he’s studying the effect of secondary consumers on primary consumers. his current research focuses on a population of blue jays and crows. they eat caterpillars and mice. if the number of blue jays increases, what are the likely effects on other populations? 1the number of crows will increase. 2the number of mice will decrease. 3the number of mice will remain the same. 4the number of caterpillars will decrease.