Which organ system includes the spleen and the tonsils?

The correct answer is the lymphatic system. The Lymphatic System is a system that consists of tiny tubes or vessels, which drains lymph fluid from the whole body. The Lymphatic System may also include the tonsils, the thymus gland, the lymph nodes and the spleen. The Lymphoid organs are the ones responsible to assist and help the lymphatic system do its job.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

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