The main acid in the stomach is hydrochloric acid (hcl). Which chemical equations show a reaction that occurs when someone takes an antacid? check all that apply. Hcl + naoh mr001-1. Jpg nacl + h2o 2hcl + caco3 mr001-2. Jpg cacl2 + co2 + h2o 2hcl + mg(oh)2 mr001-3. Jpg mgcl2 + 2h2o 6hcl + 2al mr001-4. Jpg 2alcl3 + 3h2 hcl + nahco3 mr001-5. Jpg nacl + h2o + co2.

Snakes, dogs, and humans have a vertebral column. snakes and dogs have tails, and humans have vestigial tailbones. dogs and humans have limbs, but snakes do not. most reptiles lay eggs, but a few give birth to live young. what do these structures suggest about the evolutionary pattern between the three organisms? 1. snakes and dogs are more closely related than snakes and humans. 2. snakes and humans are more closely related than humans and dogs. 3. dogs and humans are more closely related than snakes and humans. 4. dogs, snakes, and humans share a common ancestor. 5. the early ancestor of snakes and dogs is the same, and the early ancestor of humans is different.

The graph shows the populations of two species over time. which type of symbiotic relationship does the graph represent? a. commensal b. mutualistic c. parasitic d. parent-offspring e. predator-prey

Earth takes in thermal energy from the sun in a process called . sunlight strikes earth’s surface at different angles. this angle is called the angle of . btw its