Problem:OPTIONS:
- catalyzation
- heat
- time
- energy

Answer the following question given this paragraph: Hydrogen Bonds Ionic and covalent bonds are strong bonds that require considerable energy to break. However, not all bonds between elements are ionic or covalent bonds. Weaker bonds can also form. These are attractions that occur between positive and negative charges that do not require much energy to break. Two weak bonds that occur frequently are hydrogen bonds and van der Waals interactions. These bonds give rise to the unique properties of water and the unique structures of DNA and proteins. When polar covalent bonds containing a hydrogen atom form, the hydrogen atom in that bond has a slightly positive charge. This is because the shared electron is pulled more strongly toward the other element and away from the hydrogen nucleus. Because the hydrogen atom is slightly positive (+), it will be attracted to neighboring negative partial charges (). When this happens, a weak interaction occurs between the + charge of the hydrogen atom of one molecule and the charge of the other molecule. This interaction is called a hydrogen bond. This type of bond is common; for example, the liquid nature of water is caused by the hydrogen bonds between water molecules (Figure 2.7). Hydrogen bonds give water the unique properties that sustain life. If it were not for hydrogen bonding, water would be a gas rather than a liquid at room temperature. Q: Breaking of weak bonds, which tend to form between positive and negative charges, does not require much what? A:
****
A: energy

Answer the following question given this paragraph: Q: What develop inside chambers called ovaries, which originate within flowers and mature into fruits? A:
OPTIONS:
- tomoxia seeds
- trematode seeds
- pollen seeds
- angiosperm seeds
angiosperm seeds

Answer the following question given this paragraph: Types of Biodiversity Scientists generally accept that the term biodiversity describes the number and kinds of species in a location or on the planet. Species can be difficult to define, but most biologists still feel comfortable with the concept and are able to identify and count eukaryotic species in most contexts. Biologists have also identified alternate measures of biodiversity, some of which are important for planning how to preserve biodiversity. Genetic diversity is one of those alternate concepts. Genetic diversity or variation is the raw material for adaptation in a species. A species' future potential for adaptation depends on the genetic diversity held in the genomes of the individuals in populations that make up the species. The same is true for higher taxonomic categories. A genus with very different types of species will have more genetic diversity than a genus with species that look alike and have similar ecologies. If there were a choice between one of these genera of species being preserved, the one with the greatest potential for subsequent. Q: What term describes the number and kinds of species in a location or on the planet? A:
OPTIONS:
- habitat
- Allopatric speciation
- ecosystem
- biodiversity

Answer: biodiversity

Question: Answer the following question given this paragraph: Figure 20.33 The outer surface of the heart changes from positive to negative during depolarization. This wave of depolarization is spreading from the top of the heart and is represented by a vector pointing in the direction of the wave. This vector is a voltage (potential difference) vector. Three electrodes, labeled RA, LA, and LL, are placed on the patient. Each pair (called leads I, II, and III) measures a component of the depolarization vector and is graphed in an ECG. Q: The outer surface of the heart changes from positive to negative during what? A:
OPTIONS:
- inflammation
- permeability
- reproduction
- depolarization
Answer: depolarization

input with options: Answer the following question given this paragraph: Your heart pumps blood around your body. But how does your heart get blood to and from every cell in your body? Your heart is connected to blood vessels such as veins and arteries. Organs that work together form an organ system . Together, your heart, blood, and blood vessels form your cardiovascular system . Q: What organ system is comprised of your heart, blood, and blood vessels all working together? A:
OPTIONS:
- thoraxic system
- nervous system
- digestive system
- cardiovascular system
output: cardiovascular system

Problem: OPTIONS:
- forrest floor
- emergent
- canopy
- understory
Q: Answer the following question given this paragraph: Photography by Kat. Ferns are common in the understory of the tropical rainforest . CC BY 2.0. Q: In a tropical rainforest, where are ferns common? A:
Answer:
understory