The graph illustrates what has happened over an 8 year period, when non-native nile perch were introduced to lake malawi in africa. environmental factors remained the same during this period (i. e., temperature, ph, water levels, etc.) based on the data, what recommendation would you make to african biologists? a) remove or reduce the nile perch as quickly as possible, as it is clearly out-competing the pike cichlid. b) remove the remaining pike cichlids, as they are competing with the nile perch. c) reduce both fish populations, or they will starve one another out. d) there is no competition between these species of fish.

answer: national resource conservation services

national resource conservation services is the us. based approach that provides technical and financial assistance for natural resource management. nrcs society in conservation of resources by involving in activities like farmland protection, flood prevention, watershed protection, urban conservation, conserves economic and environmental conditions. it conducts soil surveys and implements the policy of natural resources management on the society.

satellites are frequently used to make observations of the orbit on earth

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.