Which of the following applies to hyaluronidase?
it acts as a spreading factor.
it promotes blood clotting.
it is an example of an adhesin.
it is produced by immune cells to target pathogens.

It acts as a spreading factor.

Explanation:

Hyaluronidase is an enzyme that are used for the degradation of  hyaluronic acid. This enzyme increases the tissue permeability in the organism. The discoverer of Hyaluronidase was Karl Meyer.

Hyaluronidase acts as a spreading factor that allows the spread of toxins as it breaks the hyaluronic acid in snake of insect venom. This enzyme is present in the venom of snakes, honeybee and lizard.

Thus, the correct answer is option (1).

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.