According to the International Energy Agency, cellulosic ethanol biorefineries could allow biofuels to play a much bigger role in the future than organizations such as the IEA previously thought. Cellulosic ethanol can be made from plant matter composed primarily of inedible cellulose fibers that form the stems and branches of most plants. Crop residues (such as corn stalks, wheat straw and rice straw), wood waste, and municipal solid waste are potential sources of cellulosic biomass. Dedicated energy crops, such as switchgrass, are also promising cellulose sources that can be sustainably produced in many regions.
What is a promising cellulose source that can be sustainably produced in many regions?
Dedicated energy crops

She has received co-writing credits for most of the songs recorded with Destiny's Child and her solo efforts. Her early songs were personally driven and female-empowerment themed compositions like "Independent Women" and "Survivor", but after the start of her relationship with Jay Z she transitioned to more man-tending anthems such as "Cater 2 U". Beyoncé has also received co-producing credits for most of the records in which she has been involved, especially during her solo efforts. However, she does not formulate beats herself, but typically comes up with melodies and ideas during production, sharing them with producers.
Rather than beats, what two things does Beyoncé usually come up with for producers?
melodies and ideas

The evolutionary relationships and heredity of a group of organisms is called its phylogeny. Phylogenetic studies attempt to discover phylogenies. The basic approach is to use similarities based on shared inheritance to determine relationships. As an example, species of Pereskia are trees or bushes with prominent leaves. They do not obviously resemble a typical leafless cactus such as an Echinocactus. However, both Pereskia and Echinocactus have spines produced from areoles (highly specialised pad-like structures) suggesting that the two genera are indeed related.
How are the relationships within the group determined?
shared inheritance