Fuel + Oxygen + Fire -> Ash + Smoke + Heat
The type of change/s in the above reaction is/are
The spider-tailed horned viper (Pseudocerastes urarachnoides) is a species of viper, a venomous snake in the family Viperidae. The species is endemic to western Iran, and was originally described in 2006. The head looks very similar to that of other Pseudocerastes species in the region, but the spider-tailed horned viper has a unique tail that has a bulb-like end that is bordered by long drooping scales that give it the appearance of a spider. The tail tip is waved around and used to lure insectivorous birds to within striking range. For this type of hunting to work, the snake should have the body that [blank_start]camouflaged[blank_end] with the surrounding.
Native mostly to Madagascar and sub-Saharan Africa, chameleons are some of the most unique-looking animals on earth. One of the chameleon's most interesting physical features is its oddly shaped, swiveling eyes. These eyes move independently of one another, rotating nearly [blank_start]360[blank_end] degrees. Because these eyes are on the sides of a chameleon's head, and because chameleons can switch between monocular vision (where they only see images collected from [blank_start]one[blank_end] eye) and binocular vision (where they see images collected from [blank_start]both[blank_end]) chameleons can see almost everything around them, including directly behind. This special vision allows chameleons to successfully hunt [blank_start]fast-moving insect prey[blank_end] like flies or beetles as they rush past. When a chameleon spots its prey with one eye, it swivels both eyes to lock on the target. It then shoots out its long, sticky [blank_start]tongue[blank_end] to snare the prey.
An object is kept at a fixed position from the light source and screen.
Which of the following statements is true
smaller is the light source, smaller is the shadow
smaller is the object bigger is the shadow.
bigger is the light source, bigger is the shadow
bigger is the object bigger is the shadow.
A solar cooker is a device that uses the energy of [blank_start]sunlight[blank_end] directly to heat, cook or pasteurize drink and other food materials. Many solar cookers currently in use are relatively [blank_start]inexpensive[blank_end], low-tech devices, although some are as powerful or as expensive as traditional stoves and advanced, large-scale solar cookers can cook for hundreds of people. Because they use no [blank_start]fuel[blank_end] and cost nothing to operate, many nonprofit organizations are promoting their use worldwide in order to help fuel costs (especially where monetary reciprocity is low) and [blank_start]air[blank_end] pollution and to slow down the deforestation and desertification caused by gathering firewood for cooking.