Lysogenic bacteriophages contribute to bacterial virulence because bacteriophages kill human cells. carry plasmids. kill the bacteria, causing release of endotoxins. produce toxins. give new gene sequences to the host bacteria.

give new gene sequences to the host bacteria.

Explanation:

Bacteriophages are viruses that infect bacteria. Viruses are the most numerous organisms on earth and play functions in the biotic component of virtually every ecosystem. They are distinct biological entities and the main feature of this group is the dependence on specific hosts for reproduction, hence known as obligate intracellular parasites. In the lysogenic cycle, phage nucleic acid recombines with that of the bacteria forming a prophage and replicates in the host cell from one generation to another without cell lysis. By doing this, the bacteriophages give new gene sequences to the host bacteria, contributing to bacterial virulence.

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.