Prokaryotic cells get energy by utilize different sources of carbon compounds.
The correct answer is the air chambers in the bird skeletons. First of all, both reptiles and birds have amniotic fluids; and this cannot be documented by fossil studies. While it is true that birds do not have reptilian scales, this cannot be documented by fossil studies too. Warm bloodedness of birds and cold bloodedness of reptiles cannot also be documented by fossil studies. Air chambers in the bird skeleton, on the other hand, can be seen as fossil evidence and differentiated with reptilian skeletons with no air chambers.
Plants have three main tissue system.
1. dermal tissue which is the protective outer covering of a plant. In young plants it consists of single layer called epidermis. A waxy cuticle often covers epidermis and protects against water loss. In older plants, dermal tissue may be many cell layers deep and may be covered with bark.
2. vascular tissue supports the plant body and transports water and nutrients throughout the plant. The two kinds are xylem, a water-conducting tissue, and phloem, a tissue carries dissolved nutrients. Plant fibres such as cotton and linen are produced by the vascular tissue systems of plants. It contains many long, slender cells that form long tubes and have walls that are reinforced by lignin. These characteristics are similar to those of fibres such as cotton and linen. neither dermal or ground tissue consists of cells with these characteristics.
3.ground tissue produces and stores sugars and helps support the plant. It consists of parenchymal cells, collenchyma cells and Sclerenchyma cells.
A parameter is any summary number, such as the average or percentage, that describes the entire population, for example the population mean and the population proportion p are two different population parameters. In this case, i believe the answer is C. The average systolic blood pressure of all U.S men aged 40-59 eliminate.
- <span>A placebo is anything that seems to be a "real" medical treatment -- but isn't.</span>