If ticks live on the surface of the host, then where do ticks live? Answer choices: - loose soil - animals - with their fur - In the blood - Behind teeth - On the surface - In the mouth - an organism's body
On the surface

If birds and fish have different heart circulatory systems, then what aspect is different for Bird and fish hearts? Answer choices: - circulatory systems - matter vibrating - tissue - it keeps an organism warm - members of their own species - heat produced - blood - type of organs
circulatory systems

If starfish use pheromones to communicate with each other, then how do starfish communicate? Answer choices: - huddle together - sound - interact - Vibrates - wave in air - during the day - Decibels - Pheromones
Pheromones

If abreathing mask can prevent an allergic reaction, then what can prevent an allergic reaction? Answer choices: - chemical messengers - prolactin release - with their fur - sweating - Breathing mask - deoxyribonucleic acid - Cooking - hormones
Breathing mask