Why is ecological footprint bad? The ecological footprint is a measure of the resources necessary to produce the goods that an individual or population consumes. Finally, the lack of correlation between land degradation and the ecological footprint obscures the effects of a larger sustainability problem. What causes a high ecological footprint? Resource consumption such as […]
What can longitudinal waves not travel through?
What can longitudinal waves not travel through? Longitudinal waves are like mechanical waves which need the medium to propagate. These waves cannot travel through a vacuum. That is, there is absolutely in a vacuum. If there are no substances, then there are no particles for the sound waves to vibrate, which means the sound waves […]
Which fruit or seed is dispersed by animals?
Which fruit or seed is dispersed by animals? Examples include mangoes, guavas, breadfruit, carob, and several fig species. In South Africa, a desert melon (Cucumis humifructus) participates in a symbiotic relationship with aardvarks—the animals eat the fruit for its water content and bury their own dung, which contains the seeds, near their burrows. What seeds […]
What information does the slope of the line in a distance time graph give?
What information does the slope of the line in a distance time graph give? The slope of the distance-time graph indicates speed. It is because the slope of a distance-time graph determines the speed of that body, so the steeper the slope greater will be the speed of the body. What is the physical meaning […]
What is the angle of incident ray?
What is the angle of incident ray? In geometric optics, the angle of incidence is the angle between a ray incident on a surface and the line perpendicular to the surface at the point of incidence, called the normal. The angle of incidence at which light is first totally internally reflected is known as the […]
What are the effects of quenching?
What are the effects of quenching? Even cooling such alloys slowly in air has most of the desired effects of quenching; high-speed steel weakens much less from heat cycling due to high-speed cutting. Extremely rapid cooling can prevent the formation of all crystal structure, resulting in amorphous metal or “metallic glass”. What is the difference […]
Do pilots pee while flying?
Do pilots pee while flying? Piddle Packs are small bags male fighter pilots use to pee while in flight. They are specially shaped bags with absorbent beads in them. If we have to relieve ourselves, we’ll unzip the flight suit—which is designed to unzip from the top as well as the bottom—unroll the piddle pack, […]
What are the applications of DNA sequencing?
What are the applications of DNA sequencing? Homologous DNA sequences from different organisms can be compared for evolutionary analysis between species or populations. Notably, DNA sequencing can reveal changes in a gene that may cause a disease. DNA sequencing has been used in medicine including diagnosis and treatment of diseases and epidemiology studies. What are […]
What is a secondary motion?
What is a secondary motion? Secondary animation also known as secondary motion, is used to refer to flat motions that are generated as a reaction to the movement of primary motion by a character. Examples of secondary motion include the rippling of water, swish of a cloak, or jiggle of body parts when a person […]
What are examples of chemical hazards?
What are examples of chemical hazards? Some commonly used workplace chemical hazards include: Acids. Caustic substances. Cleaning products such as toilet cleaners, disinfectants, mildew remover and chlorine bleach. Glues. Heavy metals, including mercury, lead, cadmium, and aluminum. Paint. Pesticides. Petroleum products. How do you identify chemical hazards? To identify if a substance is hazardous, check […]