Answer the following question given this paragraph: Q: What type of ecologists work to identify and manipulate the processes that most limit recovery of ecosystems from disturbances? Choices: - environmental - conservation ecologists - quality ecologists - restoration ecologists A:
restoration ecologists
Answer the following question given this paragraph: Gastrulation The typical blastula is a ball of cells. The next stage in embryonic development is the formation of the body plan. The cells in the blastula rearrange themselves spatially to form three layers of cells. This process is called gastrulation. During gastrulation, the blastula folds upon itself to form the three layers of cells. Each of these layers is called a germ layer and each germ layer differentiates into different organ systems. The three germs layers, shown in Figure 43.26, are the endoderm, the ectoderm, and the mesoderm. The ectoderm gives rise to the nervous system and the epidermis. The mesoderm gives rise to the muscle cells and connective tissue in the body. The endoderm gives rise to columnar cells found in the digestive system and many internal organs. Q: What is the process of the blastula forming 3 layers of cells called? Choices: - Mitosis - internalization - fermentation - gastrulation A:
gastrulation
Q: Answer the following question given this paragraph: Hardness helps determine how an element (especially a metal) might be used. Many elements are fairly soft (silver and gold, for example) while others (such as titanium, tungsten, and chromium) are much harder. Carbon is an interesting example of hardness. In graphite (the "lead" found in pencils) the carbon is very soft, while the carbon in a diamond is roughly seven times as hard. Q: Although they differ vastly in hardness, pencil lead and diamonds both contain what element? Choices: - graphite - hydrogen - oxygen - carbon A:
A: carbon
Question: Answer the following question given this paragraph: Protein Structure. The structure of a protein starts with its sequence of amino acids. What determines the secondary structure of a protein? What are two types of secondary protein structure?. Q: What does the structure of a protein start with? Choices: - rna acids - organism acids - dna acids - amino acids A:
Answer: amino acids
*Question*
Answer the following question given this paragraph: When the helium is gone, the stars become white dwarfs. Q: When the helium is gone, the stars become what? Choices: - comets - yellow dwarfs - red giants - white dwarfs A:
**Answer**
white dwarfs
Q: Answer the following question given this paragraph: Chemistry is the study of matter and energy and how they interact, mainly at the level of atoms and molecules. Basic concepts in chemistry include chemicals, which are specific types of matter, and chemical reactions. In a chemical reaction, atoms or molecules of certain types of matter combine chemically to form other types of matter. All chemical reactions involve energy. Q: What is the study of the interaction between matter and energy called? Choices: - astronomy - climatology - geology - chemistry A:
A: chemistry