Ascience student wishes to study a new type of flower, the orchadeus. she would in particular like to study whether there is any association between whether the flower grows in sunlight and the length of the flower's stem. the orchadeus is prevalent in the student's home town. the student searches for 50 orchadeus flowers that grow in direct sunlight and 50 orchadeus flowers that grow in the shade. she measures the length of the stem in all 100 flowers. it is found that the flowers that grew in direct sunlight had longer stems than those that grew in the shade. a)this is an example of an . b)based on what the student found, there sufficient evidence to conclude that growing in the sun will cause an orchadeus flower to grow a longer stem.

good one: produce hormones that plants grow.

bad one: the problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae.

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

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explanation:

not sure if this what   you'r looking for would be percent composition