In 2007, scientists Matthew A. Pasek, Jason P. Dworkin, and Dante S. Lauretta published their study on the corrosion of the meteorite mineral schreibersite (FeNi)3P. These scientists proposed the idea that the corrosion of this meteorite mineral released a phosphite-free radical that could form activated polyphosphates and phosphorylate organic compounds. Many life-forms have phosphorus in them in the form of ATP, DNA, and phospholipids. What does this study suggest about the origin of organic biological molecules on early Earth? A. DNA, ATP, phospholipids, and all other biological molecules developed on meteorites before they came to Earth. B. The substances brought to Earth from meteorites may have played a vital role in the first organic biological molecules. C. All organic biological molecules developed from the mineral schreibersite. D. Phosphorus was the only substance that created biological molecul

wha is what i will use to get my free points

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.  

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.