The answer is B cast-off parts of shrubs and trees
The answer is there are few effective predators of rabbits.
When a new species is introduced into some area, it could very soon increase its population size if there are no natural predators. Predators maintain prey population on some optimal size and that way homeostasis in ecosystem is achieved. Without natural predators, rabbit population will increase its size. With more rabbits in the area, many native species will decrease their population size because they must compete with rabbit population for resources.
That would be genetic engineering. This study involves the use of DNA and genes.
El oxígeno que inhala del aire pasa a través de los pulmones a la sangre a través de los muchos capilares en los pulmones. La sangre rica en oxígeno se mueve a través de sus venas pulmonares hacia el lado izquierdo de su corazón y de la aorta hacia el resto de su cuerpo.
The first step of DNA replication is the separation of the two DNA strands to create a replication bubble. DNA Helicase is what breaks the hydrogen bonds joining the two strands, allowing it to unravel.
