Betty drew the lifecycle of a butterfly for A science exhibition. The lifecycle showed the various stages of growth before the egg turns into a butterfly. What type of model did Betty use? Was it hypothetical, conceptual, mathematical, or physical

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.

trachea, alveoli, lung capillaries, arteries

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.