Sentences with phrase «animal groups evolved»

Not exact matches

Some readers may wonder why the scientists won't admit that there are mysteries beyond our comprehension, and that one of them may be how those complex animal groups could have evolved directly from preexisting bacteria and algae without leaving any evidence of the transition.

Those groups of animals which evolved the ability to help each other, were more likely to survive.

«Humans are social animals — we have evolved for group life,» said Professor Jetten, co author of the book.

The social intelligence hypothesis posits that having to navigate a complex communal life, which involves challenges such as keeping track of who is a friend and who is an enemy, has pushed group - living animals to evolve the mental machinery required to solve and remember mental tasks such as the box puzzle.

From this analysis, the group found that once land animals take to the water, they evolve very quickly toward their new size, converging at around 1,000 pounds.

However, the results of more recent phylogenetic analyses, derived from comparisons between sequences of specific genes and of whole genomes, seemed to point to Ctenophora as the first group that parted company with the lineage from which the rest of the animal kingdom (including sponges) evolved.

A suite of animals that evolved in Eurasia, Australia and the Americas without the risk of predation from tool - using, fire - making, group - living hominids were suddenly faced with a new threat.

But once the ants and termites jumped the high barrier that prevents the vast variety of evolving animal groups from becoming fully social, they dominated the world.

The specific forms of each coccolith most likely evolved under pressure from zooplankton, the microscopic animal group a notch up the food chain that developed mandibles, claws, and other accoutrements for getting past the hard calcite coccoliths.

From them we can understand more about how human language evolved and social organisation in animal groups,» said Dr Stowell.

Although dogs» individual personalities are bound to affect their group's behaviour somehow, animal psychologists have long been unclear as to whether a group of dogs — playing in a park, say — is governed by the behaviours that evolved in their ancestors.

«MF and related substances had previously been thought to have evolved only in insects and related animal groups.

«It is almost impossible for us to know exactly where any one group of animals evolved because the fossil record is always very incomplete,» Hu says.

The discovery offers new insights into how social animals evolved and communicate with others in their group, the researchers say.

It will also improve our understanding of the way other animal groups are socially organised and how human language evolved.

It was then that arthropods evolved their exoskeleton — an innovation that has helped them become the most abundant animal group on the planet, with over a million species described to date.

«It was during this Cambrian period that many of the most familiar traits associated with this group of animals evolved, like a hard exoskeleton, jointed legs, and compound (multi-faceted) eyes that are shared by all arthropods.

For instance, studies of Caribbean lizards by Jonathan Losos» group show that animals often evolve predictable forms and ways of life when they colonize similar ecosystems.

A subsequent collision between Antarctica and Africa raised more mountains and released more sediment from 530 to 510 million years ago may have led to the Cambrian Explosion, when most major groups of animals evolved (including trilobites and bivalves which used abundant calcium to build protective carbonate shells).

«Our group has been leading the way in understanding how animals can rapidly evolve tolerance to pesticides,» said Relyea, the David M. Darrin»40 Senior Endowed Chair at Rensselaer.

This animal later evolved into the Tomarctus — a forbearer of the genus Canis (aka canine)-- which is a group including the wolf, jackal, and dog.

This founding group opened a shelter and the organization continued to grow and evolve to meet the increased demand for our services — staying true to our founders» vision that no animal should ever be unnecessarily euthanized.

Evolving Strategies for Treating and Preventing Parvo in Shelter Dogs is part of an ongoing series of educational programs from Maddie's Institute, the academic division of Maddie's Fund ®, providing the most innovative animal welfare information to shelter staff, veterinarians, rescue groups and community members to increase the lifesaving of homeless dogs and cats community - wide.

Bober: Over the past three years, as my role at PIJAC has evolved, I've been very gratified to see the various bodies in the industry — and I'm not just talking about the trade associations, but also groups like NAIA [National Animal Interest Alliance], AKC [American Kennel Club] and some of the other registry groups out there — demonstrate an evolving understanding that we all need to be aware of each other.

The works in this collection are supremely imaginative in both form and content: from the semi-autobiographical novel painted by a young artist who died in the Holocaust (Charlotte Salomon) to Alison Knowles» computer - generated chance operation for «imagining» houses and their inhabitants; from the pseudo-scientific examination of a conversation between a mother and a daughter (Eleanor Antin) to the dark, comic interrogation of violence against women (Sue Williams); from the transformations of newspaper headlines (Suzanne Treister) to the probing of animal consciousness (Cole Swensen & Shari De Graw); from the body maps drawn by South African women with AIDS (Bambanani Women's Group) to the alchemical transformation of the pregnant body into an evolving landscape and philosophical meditation (Susan Hiller).

The first time that a group of species evolved under tree - living, came down from the trees to become bi-pedal stick - wielding gangster animals.........