Changing environments. 7. LS 1.7: DOK 3- Some ferns can reproduce by sending out shoots called rhizomes. The rhizomes produce offspring that grow near the parent. The rhizomes produce a new plant that is genetically identical to the parent, as shown below. Fern: Shoots (Step. Leaves) and Roots RN WILLING Which of the following statements BEST describes the method by which these ferns reproduce? A. The fern reproduces sexually because more than one new plant can be produced.
B. The fern reproduces sexually because it is a multicellular organism.
C. The fern reproduces asexually because there is only one parent plant.
D. The fern reproduces asexually because the new plant performs photosynthesis.​

The most efficient way to establish the best possible economizer position is to measure

1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.

Listen base your answer to the question on the information below.propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below.c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol.what is the correct structural formula for a molecule of methanethiol