What are the 4 main causes of natural ecosystem degradation? Important direct drivers include habitat change, climate change, invasive species, overexploitation, and pollution. Most of the direct drivers of degradation in ecosystems and biodiversity currently remain constant or are growing in intensity in most ecosystems (see Figure 4.3). Does life require a purpose and a […]

What are these geological processes that occur along the boundaries? Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along plate boundaries in zones that may be anything from a few kilometres to a few hundred kilometres wide. What is the definition of geological process? Geological processes are events that occur on a geological timescale […]

What cells produce pepsin which breaks down proteins? Pepsin is a stomach enzyme that serves to digest proteins found in ingested food. Gastric chief cells secrete pepsin as an inactive zymogen called pepsinogen. Parietal cells within the stomach lining secrete hydrochloric acid that lowers the pH of the stomach. A low pH (1.5 to 2) […]

Are observations based on the five senses? An observation is information you gather by using your five senses. Those senses are sight, hearing, touch, smell, and taste. You make an observation when you see a bird or hear it sing. Do scientists make observations using their senses? Observation is essential in science. Scientists use observation […]

What chemical change happens when you mix baking soda and vinegar? When vinegar and baking soda are first mixed together, hydrogen ions in the vinegar react with the sodium and bicarbonate ions in the baking soda. The result of this initial reaction is two new chemicals: carbonic acid and sodium acetate. The second reaction is […]

What is the similarity between a meander and a gully 5 points? The similarity between a meander and a gully is that “Meander and gully are created by flowing water”. EXPLANATION: A gully is formed when rainwater runs-off to form a large groove or rill in the soil. Gullies come together to form streams. What […]

Why do scientists think mammals developed larger brains than reptiles? Birds and mammals have brains that are up to 10 times larger, relative to body size, than those of reptiles and other animals. Why? Some researchers have proposed that the early, nocturnal mammals evolved larger brains to boost their hearing, because sight was less important […]

What is temperature mean? Temperature is a measure of the average kinetic energy of the particles in an object. When temperature increases, the motion of these particles also increases. The temperature is related to the average kinetic energy—not the total kinetic energy. Here’s a classic example that you can try at home. What is temperature […]

Which figures can have two sides of the same length but are not parallelograms? A Trapezoid has two sides that are the same length and it is not a parallelogram. What shapes are quadrilaterals but not parallelograms? An ordinary quadrilateral with no equal sides is not a parallelogram. A kite has no parallel lines at […]

What is the depression on the distal end of the anterior humerus? Coronoid Fossa Which is a spool shaped process on distal end of the humerus that is found medial to the capitulum and articulates with the ulna? humerus. … smooth articular surfaces (capitulum and trochlea), two depressions (fossae) that form part of the elbow […]