Which of the following statements is true? (there may be more then one answer) 1. all multicellular organisms have circulatory systems. 2. all multicellular organisms have specialized cells. 3. all multicellular organisms have skeletal systems.

Many state and local authorities are making laws regarding recreation on lakes, rivers, and oceans to reduce water pollution. why would lawmakers need to consult with scientists before making these laws? a) to make scientists feel important b) so that the laws reduce pollution by a sufficient amount c) so that parks and lakefront facilities will still make large profits d) so that the public will believe that the laws are important to follow

What are two ways in which waves erode the land?

The response is the basis for vaccination. primary secondary tertiary none of the above