Question 5 Early in the development of a human, a doctor can detect a heartbeat. Which type of structure is the heart?

answer; i believe the correct answer is (replication is not conservative);

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.