Clifford maurice (171 risultati)

Condizione: As New. Like New condition. A near perfect copy that may have very minor cosmetic defects.

Hardcover. Condizione: Very Good. 1. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Soft cover. Condizione: Near Fine. Light wear. Cover art by John Schoenherr. Short Novel: "Ultima Thule" by Mack Reynolds. Novelette: "Hiding Place" by Poul Anderson. Short Stories: "Horrible Example" by Clifford D. Simak, and "The Four-Faced Visitors of Ezekiel" by Arthur W. Orton. Science Fact: "Sub-Mach" by G. Harry Stine. Special Feature: "An Intorduction to the Calculus of Desk-Clearing" by Maruice Price. Readers' Departments: The Editor's Page, In Times to Come, The Analytical Laboratory, The Reference Library by P. Schuyler Miller, and Brass Tacks. …

Soft cover. Condizione: Near Fine. Light wear. Cover art by John Schoenherr. Short Novel: "Ultima Thule" by Mack Reynolds. Novelette: "Hiding Place" by Poul Anderson. Short Stories: "Horrible Example" by Clifford D. Simak, and "The Four-Faced Visitors of Ezekiel" by Arthur W. Orton. Science Fact: "Sub-Mach" by G. Harry Stine. Special Feature: "An Intorduction to the Calculus of Desk-Clearing" by Maruice Price. Readers' Departments: The Editor's Page, In Times to Come, The Analytical Laboratory, The Reference Library by P. Schuyler Miller, and Brass Tacks. …

hardcover. Condizione: Good. Connecting readers with great books since 1972! Used textbooks may not include companion materials such as access codes, etc. May have some wear or writing/highlighting. We ship orders daily and Customer Service is our top priority.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Paperback. Condizione: new. Paperback. Understanding What Ticks Are, Their Biology, and Why Some People May Be Fascinated by Them Ticks are small, blood-feeding arachnids that belong to the subclass Acari, which also includes mites. Despite their tiny size, ticks play a significant role in both ecology and public health. They are best known for their role as vectors of disease, transmitting a wide range of pathogens to both humans and animals. However, beyond their negative associations, ticks are fascinating creatures when examined from a scientific, biological, and even philosophical perspective.What Are Ticks?Ticks are not insects-they are arachnids, meaning they have eight legs as adults (unlike insects, which have six). Their body is divided into two main parts: the capitulum (which includes the mouthparts) and the idiosoma (which contains the rest of the body). Ticks lack wings and antennae and are flattened in shape, which helps them hide in the fur or feathers of their hosts.There are two main families of ticks: Hard ticks (Ixodidae): These have a tough outer shell called a scutum and are commonly foundclinging to grass, bushes, or animals waiting to attach to a host. Soft ticks (Argasidae): These lack a hard scutum and are more leathery in appearance. They usually reside in dark, sheltered places and come out to feed for short periods.Ticks go through four life stages: egg, larva (six-legged), nymph (eight-legged), and adult. After hatching, each life stage requires a blood meal to molt into the next stage. Some species of ticks can live for years, depending on environmental conditions and host availability.Biology and AdaptationsTicks are marvels of evolutionary adaptation. Their primary biological purpose is to feed on blood-a task they are remarkably well-equipped for. Ticks can detect the presence of a host through carbon dioxide, body heat, sweat, and movement. They use a structure called the Haller's organ on their front pair of legs to detect these signals, allowing them to precisely locate their prey.Once a tick finds a host, it uses its chelicerae (cutting mouthparts) to pierce the skin and then inserts a hypostome, which is barbed and helps anchor the tick in place. Some species secrete a cement-like substance to help them stay attached. Ticks can remain attached forseveral days, during which time they extract blood while releasing saliva that contains anticoagulants and numbing agents to prevent detection.Ticks are also highly resilient. They can survive for extended periods without feeding, resist dehydration, and endure harsh environmental conditions. This hardiness has contributed to their global spread and their persistence in both urban and rural environments.Why Some People Are Fascinated by TicksWhile most people are repulsed or frightened by ticks-and understandably so due to the health risks they pose-there is a niche group of individuals who find ticks genuinely fascinating. This interest may be driven by a number of factors: 1. Scientific Curiosity: Entomologists, parasitologists, and biologists often study ticks to better understand disease transmission, parasite-host relationships, and evolution. The complexity of the tick's life cycle and feeding behavior makes them valuable subjects in scientific research. 2. Appreciation for Adaptation: Ticks are incredibly specialized. Their ability to sense, attach, feed, and survive under extreme9conditions is a testament to the power of natural selection. Observing how these organisms have evolved to thrive as parasites can spark admiration for their resilience and precision. 3. Microscopic Beauty: Under magnification, ticks reveal intricate body structures that are invisible to the naked eye. Some collectors or hobbyists use microscopes to observe their anatomical d Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Condizione: As New. Unread book in perfect condition.

Condizione: As New. Unread book in perfect condition.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Condizione: As New. Unread book in perfect condition.