Group items tagged

" teach them how to be their own filters"

"The transition from unicellular to multicellular life was one of a few major events in the history of life that created new opportunities for more complex biological systems to evolve. Predation is hypothesized as one selective pressure that may have driven the evolution of multicellularity. Here we show that de novo origins of simple multicellularity can evolve in response to predation. We subjected outcrossed populations of the unicellular green alga Chlamydomonas reinhardtii to selection by the filter-feeding predator Paramecium tetraurelia. Two of five experimental populations evolved multicellular structures not observed in unselected control populations within ~750 asexual generations. Considerable variation exists in the evolved multicellular life cycles, with both cell number and propagule size varying among isolates. Survival assays show that evolved multicellular traits provide effective protection against predation. These results support the hypothesis that selection imposed by predators may have played a role in some origins of multicellularity."

" Meme Maker: una herramienta online para crear memes en vídeo (también de imágenes). Add Subtitles: nos permite añadir subtítulos a nuestros vídeos. Video Montage Maker: para crear vídeos slideshow combinando vídeos e imágenes. Video Collages: creación de collages a partir de vídeos e imágenes. Video Filters: permite aplicar bellos filtros a los vídeos y realizar diversos ajustes (brillo, saturación, contraste…). Add Text: para añadir textos o marcas de agua a nuestros vídeos. Image to Video: creación de vídeos a partir de imágenes y animaciones GIF. Reverse video: nos permite aplicar un efecto de rebobinado a nuestros vídeos. Video Resizer: para cambiar el tamaño de cualquier vídeo. Loop Video: efecto de loop o repetición para tus vídeos. Trim Video: para cortar y recortar vídeos. Mute Video: permite eliminar el sonido de cualquier vídeo en apenas unos clics. Stop Motion Maker: transforma tus contenidos en un vídeo stop motion."

Selección de aplicaciones y recursos alternativos, abiertos, libres y más éticos, categorizados por funcionalidad y objetivo. + revista, newsletter etc "Ethical.net is a collaborative platform for discovering and sharing ethical product alternatives - whether that means purchasing from a social enterprise, thrift shopping, or learning how to fix your old phone instead of buying a new one. we consider ethical as going in the direction of harmony with other people, animals, and the rest of the natural world"