A cherry is any of various trees belonging to the genus Prunus and their edible fruits. Sweet cherries and tart cherries are cultivated commercially, and a number of other species and hybrids are grown as ornamentals for their attractive flowers. Some ar
Flint is a hard, tough, chemical or biochemical sedimentary rock that breaks with a conchoidal fracture. It is a form of microcrystalline quartz that is typically called “chert” by geologists. It often forms as nodules in sedimentary rocks such as chalk and marine limestones. Dolomite (also...
Types of houses by structure Before we get to the different types of houses, it can be helpful to know the common types of residential structures. Knowing whether you want a single-family home or a condo can narrow down your search and make it easier to find something that suits your budg...
Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications in successive generations. The theory of evolution is
Novaculite is a dense, hard, fine-grained, siliceous rock that breaks with a conchoidal fracture. It forms from sediments deposited in marine environments where organisms such as diatoms (single-celled algae that secrete a hard shell composed of silicon dioxide) are abundant in the water. The...
You can't always tell how hard a rock is by feeling it. Testing the fire-starting capability of a few types of rocks is one way to learn which are the most effective. Another option is to ask a local expert on flint and steel fire starting, or ask a local geologist. Some types of...
most commonly calcite or dolomite. The crystalline hard rock is widely used for creating luxury counter tops, pillars or floors. Marble can add beauty and character to a kitchen, and since it’s available in a variety of patterns and colors, you can never get tired of experimenting with vari...
Very gently, something took hold of Gibson and slid him down the curving side of the porthole-studded wall on to what had suddenly become the floor. It was hard to realise that up and down had returned once more, harder still to connect their reappearance with that distant, attenuated thund...
Sure enough, this is also confirmed by hard data from our survey, with 48.52% of Advocate respondents picking role-playing games as their favorite. What games do you enjoy most? AdvocatesMediatorsProtagonistsCampaignersOverall Average Sports and racing games 2.07% 1.61% 4.17% 4.13% 5.24% First...
This type of sedimentary rock is similar to graywacke, which is also a rock laid down near its source. But whereas graywacke forms in a seafloor setting, arkose generally forms on land or near shore specifically from the rapid breakdown ofgranitic rocks. This arkose specimen is of late Pennsyl...