Recent findings show cancer takes tough toll on family finances
About six out of 10 working-age adults hit with a cancer diagnosis say it put real pressure on their financial survival, a new report finds.
13 hours ago
0
0
About six out of 10 working-age adults hit with a cancer diagnosis say it put real pressure on their financial survival, a new report finds.
13 hours ago
0
0
A study from the University of Jyväskylä confirms the concerns raised in the public domain about how young people's decreased fitness may affect their future work ability. The association of low youth cardiorespiratory ...
Apr 8, 2024
0
0
More long COVID awareness and education is needed among doctors, nurses, care providers and the public in Canada to reduce stigma around the condition and legitimize the disability, according to a new report from Simon Fraser ...
Apr 5, 2024
0
4
A team of researchers is calling for comprehensive changes to U.S. health care and social policies to improve diagnosis and treatment of perinatal mental health conditions and mitigate the dramatic disparities that put women ...
Apr 3, 2024
0
5
In botany, a leaf is an above-ground plant organ specialized for photosynthesis. For this purpose, a leaf is typically flat (laminar) and thin. There is continued debate about whether the flatness of leaves evolved to expose the chloroplasts to more light or to increase the absorption of carbon dioxide. In either case, the adaption was made at the expense of water loss. In the Devonian period, when carbon dioxide concentration was at several times its present value, plants did not have leaves or flat stems. Many bryophytes have flat, photosynthetic organs, but these are not true leaves. Neither are the microphylls of lycophytes. The leaves of ferns, gymnosperms, and angiosperms are variously referred to as macrophyll, megaphylls, or euphylls.
Leaves are also the sites in most plants where transpiration and guttation take place. Leaves can store food and water, and are modified in some plants for other purposes. The comparable structures of ferns are correctly referred to as fronds. Furthermore, leaves are prominent in the human diet as leaf vegetables.
This text uses material from Wikipedia, licensed under CC BY-SA