Does pH increase or decrease during exercise? Exercise has many short-term (acute) and long-term effects that the body must be capable of handling for the exercise to be beneficial. In particular, exercise initiates chemical changes in the blood which, unless offset by other physiological functions, cause the pH of the blood to drop. What is […]
How do birds die from oil spills?
How do birds die from oil spills? For seabirds, oil can sink their natural buoyancy and literally drag them into a watery grave. And the birds that try to clean themselves ingest a sticky poison that ravages their livers, lungs, and intestines. Some lucky ones, however, get away with just a few smudges. How long […]
What does it mean if a star is red shifted?
What does it mean if a star is red shifted? Ever since 1929, when Edwin Hubble discovered that the Universe is expanding, we have known that most other galaxies are moving away from us. Light from these galaxies is shifted to longer (and this means redder) wavelengths – in other words, it is ‘red-shifted’. What […]
What is a lever for Grade 5?
Can I boil food in a vacuum sealed bag?
What is the main function of meiosis?
What is the main function of meiosis? Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. What is difference between meiosis 1 and meiosis 2? Both produce […]