Coughing, oils in skin, cilia that sweep out invaders, saliva chemicals, and stomach acid are all a part of which type of immune system defense? A. specific immune defense B. neutral immune defense C. non-specific immune defense

The negative impacts of nonnative species generally outweigh the positive impacts

Where substance is produced during cellular respiration

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.