Into what structure does the embryo excrete wastes on reptiles

 Allantois 

Allantois is known to be extra-embryonic membrane of reptiles that helps in the exchange gases and handle liquid waste. Allantois function by storing waste from the embryo, thus, allantois fuse with the chorion to form chorioallantoic memnbrane which carries carbon dioxide and oxygen to and from the embryo.

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.

thinking it would be d not too sure but i think it's right