we know that agnostids were primitive arthropods-relatives of modern-day insects. However, the fossil information does not allow paleontologists to determine with certainty what agnostids ate or how
To determine prevalence of, and risk factors for, bacterial vaginosis (BV) among herpes simplex virus (HSV) 2 seropositive Tanzanian women at enrollment in... K, Baisley,J, Changalucha,HA Weiss,... - 《Sexually Transmitted Infections》 被引量: 0发表: 2019年 ...
For the marine macroalgae, evidence of the impact of climate change, ocean acidification and introduced species on native floras is often anecdotal and points to the need for long-term monitoring and scientific study to determine changes in abundance and distribution. The use of species and site ...
Species conservationHierarchisation and prioritisation methods represent a crucial step to determine priorities and implement actions in conservation biology: they are required to determine how to allocate available resources to the different components of biodiversity. However, they are very heterogeneous in...
Dawson had written about the night of January 20: “I therefore decided to determine the end and injected (myself) morphia gr. 3/4 and shortly afterwards cocaine gr. 1 into the [king’s] distended jugular vein.” The injection resulted in the king’s death, an act alternately referred ...
We discuss the importance of the feasible set in understanding how general constraints determine observable variation and influence the forms of predicted and empirical patterns. 展开 关键词: constraints distribution of wealth feasible set hollow curve macroecology MaxEnt species abundance distribution ...
the time of day.It uses its eyes to measure the position of the sun.These two pieces of information - the time of day and the point where the sun is in the sky - allow the butterfly to determine the way to go.Finally,it manages to reach the places wher...
Some lawn diseases are challenging to identify. In many cases, their symptoms may mimic turf injuries (such as drought or stress) or the symptoms of other lawn diseases. To determine the best treatment method for your lawn, you must know the disease you’re up against. ...
to micro-scales. To better understand the process of negative priming following biochar application, we mapped the elemental composition within intact aggregates to determine whether the retention of rhizodeposits (and other forms of C) may be facilitated via protection by Fe and Al-rich soil ...
I is hard to decide on the ages of living fish.B. The older animals are, the more teeth they have.determine their ages. In some species, adultteeth don't come in unti a certainC. Animals' skeletal structures change al the timeage. Hair, fur, and skin can also provide visual clues ...