What is survival of the fittest examples? In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs. Who […]
Why are subtropical highs?
Why are subtropical highs? The warm air at the low latitudes rises and moves toward the poles. The rising air, and the subsequent clouds and precipitation, cause the tropics to be very wet. As the air moves towards the subtropics, it descends over the oceans and creates semi-permanent circulation features called subtropical highs. Where would […]
What are the two types of emission spectra?
What are the two types of emission spectra? The spectra can be divided into two types viz., emission and absorption spectra. The differences between them are given below. 1) The emission spectrum is obtained due to emission of radiation from the substances. What is most important about the emission spectra? The different colors of light […]
How much force does it take to push a shopping cart?
How much force does it take to push a shopping cart? A full shopping cart requires a force of 88.0 Newtons to move across a horizontal floor at a constant velocity. What are the forces acting on a shopping cart when a woman pushes it? Answer: 1. frictional force, static force, pressure, etc. What acceleration […]
What are 3 things a testable question needs?
What are 3 things a testable question needs? A testable question asks how one change (independent variable) has an effect on something else (dependent variable)….Scientific Questions = Testable Questions How does (IV) affect (DV) ? What is the effect of (IV) on (DV) ? What effect does (IV) have on (DV) ? Can you prove […]
What is the formula of urine?
What is the formula of urine? On an elemental level, human urine contains 6.87 g/L carbon, 8.12 g/L nitrogen, 8.25 g/L oxygen, and 1.51 g/L hydrogen. The exact proportions vary with individuals and with factors such as diet and health. In healthy persons, urine contains very little protein and an excess is suggestive of illness. […]
What three colors are the primary colors of light?
What weather does a cumulus cloud bring?
What weather does a cumulus cloud bring? What weather is associated with cumulus clouds? Mostly, cumulus indicates fair weather, often popping up on bright sunny days. Though if conditions allow, cumulus can grow into towering cumulus congestus or cumulonimbus clouds, which can produce showers. What type of weather does a stratus cloud bring? What weather […]
Why are pencils so cheap?
Why are pencils so cheap? “If graphite is so expensive then how come pencils are so cheap?” Because the graphite core (commonly called “lead”, though it contains no lead at all) is not high-grade pure graphite, it is very inexpensive. Is graphite used in batteries? Graphite materials remain the dominant active anode material used in […]