What were the first hominins? australopithecines What four characteristics define a hominin? Some characteristics that have distinguished hominins from other primates, living and extinct, are their erect posture, bipedal locomotion, larger brains, and behavioral characteristics such as specialized tool use and, in some cases, communication through language. What are 5 types of hominids? In this […]
What is the difference between a supersaturated solution and a saturated solution?
What is the difference between a supersaturated solution and a saturated solution? A saturated solution contains the maximum amount of solute that will dissolve at that temperature. Any further addition of solute will result in undissolved solid on the bottom of the container. A supersaturated solution contains more than the maximum amount of solute that […]
What are two things that might affect an ecosystem?
What are two things that might affect an ecosystem? Wind, rain, predation and earthquakes are all examples of natural processes which impact an ecosystem. Humans also affect ecosystems by reducing habitat, over-hunting, broadcasting pesticides or fertilizers, and other influences. What can disrupt an ecosystem? Disruptions to Ecosystems Wildfires. Fire is a common disruption to ecosystems […]
What task requires the most work lifting a 50 kg sack 2 meters or lifting a 25 kg sack 4 meters?
What happens if a helicopter flies too high?
What happens if a helicopter flies too high? What Happens If a Helicopter Flies Too High? As the helicopter ascends, the air begins to thin. With thinner air, the main rotor becomes less efficient. The higher the helicopter flies, the slower it ascends due to the reduced power generated by the rotor. What would happen […]
What accident happened at Chernobyl quizlet?
What accident happened at Chernobyl quizlet? A: explosions that ruptured one of the reactors of the Chernobyl nuclear power plant and the consequent fire that started on the 26 April 1986 and continued for 10 days resulted in an unprecedented release of radioactive materials into the environment. What date and time did the accident at […]
Can you see outside in a submarine?
Can you see outside in a submarine? Can You See Outside When You are Underwater? No, Navy submarines don’t have windows or portholes so the crew can watch undersea life. Submarines have only periscopes for outside vision, and those are only used close to the surface, a periscope depth (PD). Where are periscopes used? Uses […]
What is the flat ocean floor called?
What is the flat ocean floor called? abyssal plain What are the three divisions of the continental margin? The continental margins consist of three portions: (1) the continental shelf which has shallow water depths rarely deeper than 650 ft) and extends seaward from the shoreline to distances ranging from 12.3 miles to 249 miles, (2) […]
How could the rescue workers use squeezing?
How could the rescue workers use squeezing? Explanation: The generator underneath the tiles will convert the squeezing energy into electrical energy that will power the flashlight. What type of potential energy is a boulder resting at the top of a hill? abundant potential What are the energy transfers when walking up a flight of stairs? […]
How do you choose a schedule for reinforcement?
How do you choose a schedule for reinforcement? Choosing a Schedule of Reinforcement When choosing a schedule, consider: The skill of the staff implementing the intervention. The desired rate of responding. The need for consistency in responding. What is an example of fixed interval? A weekly paycheck is a good example of a fixed-interval schedule. […]