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Land plants evolved from a group of freshwater green algae, perhaps as early as 850 mya, [3] but algae-like plants might have evolved as early as 1 billion years ago. [2] The closest living relatives of land plants are the charophytes, specifically Charales; if modern Charales are similar to the distant ancestors they share with land plants, this means that the land plants evolved from a ...
The first known mass extinction was the Great Oxidation Event 2.4 billion years ago, which killed most of the planet's obligate anaerobes. Researchers have identified five other major extinction events in Earth's history, with estimated losses below: [11] End Ordovician: 440 million years ago, 86% of all species lost, including graptolites
These connections to nature can still be seen in people today as people gravitate towards, identify with, and desire to connect with nature. [6] These connections are not limited to any one component part of nature, as people show connections to a wide range of natural things including plants, animals, and environmental landscapes. [ 7 ]
From zoos to botanical gardens, these are the best places to learn more about plants and animals, according to USA TODAY 10Best readers. Reconnect with nature at the best zoos, safari parks, and ...
Nature connectedness (as a construct) is also known as nature relatedness, connectivity with nature, emotional affinity toward nature, or inclusion of nature in self. Although nature relatedness is a stable individual trait, it can change based on one's experience with nature, [ 8 ] meaning the more time an individual spends in nature, the more ...
The first fossil records of vascular plants, that is, land plants with vascular tissues, appeared in the Silurian period. The earliest known representatives of this group (mostly from the northern hemisphere) are placed in the genus Cooksonia. They had very simple branching patterns, with the branches terminated by flattened sporangia.
Polyploidy is pervasive in plants and some estimates suggest that 30–80% of living plant species are polyploid, and many lineages show evidence of ancient polyploidy (paleopolyploidy) in their genomes. [8] [9] [10] Huge explosions in angiosperm species diversity appear to have coincided with ancient genome duplications shared by many species.
“We saw damage to plants this summer that had never showed heat stress before,” Schilling said. Sunburned leaves of a mock orange shrub on Aug. 23. Brown patches show where the tissue was damaged.