Answer the following question given this paragraph: A habitat that is quickly being destroyed is the wetland . By the 1980s, over 80% of all wetlands in parts of the U. S. were destroyed. In Europe, many wetland species have gone extinct. For example, many bogs in Scotland have been lost because of human development. Q: Bog destruction in scotland is an example of the widespread loss of what kind of habitat? Choices: - tundra - ocean - desert - wetland A:
wetland
Answer the following question given this paragraph: The embryo develops from a fertilized egg. While still inside the seed, the embryo forms its first leaf (cotyledon) and starts to develop a stem (hypocotyl) and root (radicle). Q: What is the name of the first leaf developed inside an embryo? Choices: - exon - polylepis - gastromyzon - cotyledon A:
cotyledon
Q: Answer the following question given this paragraph: During summer in the Northern Hemisphere, the North Pole is tilted toward the Sun. The Sun's rays strike the Northern Hemisphere more directly ( Figure below ). The region gets a lot of sunlight. Summer solstice is June 21 or 22. At that time, the Sun's rays hit directly at the Tropic of Cancer (23.5N). This is the farthest north that the Sun will be directly overhead. Summer solstice in the Northern Hemisphere is winter solstice in the Southern Hemisphere. Q: During summer in the northern hemisphere, the north pole is tilted toward what? Choices: - moon - the north star - horizon - sun A:
A: sun
Question: Answer the following question given this paragraph: Coefficients are used to balance chemical equations. A coefficient is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. Q: What are used to balance chemical equations? Choices: - isotopes - densities - outputs - coefficients A:
Answer: coefficients
*Question*
Answer the following question given this paragraph: What causes puberty to begin? The hypothalamus in the brain "tells" the pituitary gland to secrete hormones that target the testes. The main pituitary hormone involved is luteinizing hormone (LH) . It stimulates the testes to secrete testosterone. Testosterone, in turn, promotes protein synthesis and growth. It brings about most of the physical changes of puberty, some of which are shown in Figure below . In addition to the changes shown below, during puberty male facial hair begins to grow, the shoulders broaden, and the male voice deepens. You can watch an animation of these and other changes that occur in boys during puberty at the Interactive Body link: http://www. bbc. co. uk/science/humanbody/body/interactives/lifecycle/teenagers/ . Q: What hormone, which is associated with luteinizing hormone and male sexuality, helps bring about physical changes in puberty? Choices: - steroids - epinephrine - estrogen - testosterone A:
**Answer**
testosterone
*Question*
Answer the following question given this paragraph: Unsaturated hydrocarbons that contain one or more triple bonds are called alkynes . The names of specific alkynes always end in yne and have a prefix for the number of carbon atoms. The structural formula in the Figure below represents the smallest alkyne, named ethyne, which has two carbon atoms and two hydrogen atoms (C 2 H 2 ). Ethyne is also called acetylene. It is burned in acetylene torches, like the one pictured in the Figure below . The flame of an acetylene torch is so hot that it can melt metal. Q: Alkynes are what type of compound? Choices: - reversible hydrocarbons - proteins hydrocarbons - Split Hydrocarbons - unsaturated hydrocarbons A:
**Answer**
unsaturated hydrocarbons