If the urinary system excretes a substance used in drug testing, then which bodily system excretes a substance commonly used in drug testing? Answer choices: - Evaporation - urinary system - animals - aqueous solution - cardiovascular system - opiate system - Integumentary system - sweating
urinary system

If breathing is when fish convert from oxygen in water to oxygen in blood, then when fish convert oxygen in water to oxygen in blood this is called? Answer choices: - evaporation - barrel-shaped - motility - Heart rate - squeeze - breathing - hormones - survival
breathing

Q: If bullfrogs are of the class of creatures that were the first true tetrapods, then these belong to the class of creature that were the first true tetrapods:? Answer choices: - millipede - crabs - four limbs - bullfrogs - gastropod - a fish - warm-blooded - insects
A: bullfrogs

Question: If the work of wind, water, and time causes a river to become deeper and wider, then the work of what causes a river to become deeper and wider? Answer choices: - looseness of dirt or compost - just time - Veins and arteries. - just wind - Physical weathering - The area was once underwater - just water - wind, water, and time
Answer: wind, water, and time

*Question*
If when plants are covered in sediment layer over time, fossils form, then what forms when plants are covered in layers of sediment over time? Answer choices: - Conifers - watershred - fossils - H2O - Echinoids - bubbles - loose soil - bones
**Answer**
fossils

*Question*
If behaviors that improve fitness increase through evolution, then what do behaviors that improve fitness increase through? Answer choices: - density - evolution - Plants growth - gravity - animals - competition - death - environment
**Answer**
evolution