- In Vitro Cellular & Developmental Biology-Plant 被引量: 19发表: 1980年 Crossing and Morphological Relationships among Native Clovers of Eastern North America The Trifolium species of eastern North America now occupy a much reduced area in comparison to their earlier range. These species include T...
alone — almost triple the number of people. High densities of honey bee colonies increase competition between native bees, putting even more pressure on the wild species that are already in decline. I used to believe that honey bees were a gateway species, and that concern over their health ...
Evolutionary scientists have explained human food sharing like this: by giving away food to strangers, individuals may promote partnership and group cohesion (凝聚力), thereby helping the species succeed within the dynamic environment of evolutionary adaptation. ...
The objective of this challenge is to get your Magic Number to zero at some point in 2024. You don't necessarily need to remain at zero, you just need to get there at a point in time!When you complete the challenge, please do purchase the Challenge Microbadge (see below) and show ...
sampling effort, we used several independent datasets from North America (Pacific Northwest golf courses, suburban Maryland, and Chihuahuan Desert) to estimate the number of bowls in a sampling event at which additional bowls added little to estimates of species richness or to cumulative species ...
Evolutionary, genetic, environmental and hormonal-induced plasticity in the fate of organs arising from axillary meristems in Passiflora spp. Tendrils can be found in different plant species. In legumes such as pea, tendrils are modified leaves produced by the vegetative meristem but in the grape...
A.It is a rare species of rat.B.It has a good sense of smell.C.It sacrifices its life to detect dangers.D.It is terrified of explosive devices.【3】A.13 minutes.B.30 minutes.C.40 minutes.D.4 days. 免费查看参考答案及解析
Rescue of Taylor Cook About a year after Patience Creek, John is in Canada with Agent Walker and is called to Turner County, South Dakota, after several harvesters raided Taylor Cook’s farm. She called the Human-Garde hotline in North America and explains that she is in danger. The opera...
In addition to HVR, there is an arginine–serine-rich (RS) domain and a proline-enriched region in the PSD that are likely involved in protein–protein interactions (Beye et al. 2003). A previous analysis of the csd PSD genealogy of three Apis species identified no...
Investigation of Microsporidia prevalence with calcofluor white and uvitex 2B chemiluminescence staining methods and molecular analysis of species in diarrheal patients Microsporidia, obligate intracellular parasites, were first defined by Nageli in 1857. Microsporidia phylum consists of 200 genus and 1500 spe...