Answer the following question given this paragraph: Like a blanket on a sleeping person, greenhouse gases act as insulation for the planet. The warming of the atmosphere is because of insulation by greenhouse gases. Greenhouse gases are the component of the atmosphere that moderate Earth's temperatures. Q: Like a blanket on a sleeping person, greenhouse gases act as what for the planet? Choices: - ventilation - plastic - Exterior Coverings - insulation A:
insulation
(Question)
Answer the following question given this paragraph: There are only about 25 living species of lancelets. They inhabit the ocean floor where the water is shallow. Lancelet larvae are free-swimming. The adults can swim but spend most of their time buried in the sand. Like tunicates, lancelets are filter feeders. They take in water through their mouth and expel it through an opening called the atriopore (see Figure below ). Lancelets reproduce sexually and have separates sexes. Q: Where do lancelets live? Choices: - on land - riverbeds - deep sea caves - shallow ocean water A:
(Answer)
shallow ocean water
Ques: Answer the following question given this paragraph: Respiratory Rate and Control of Ventilation Breathing usually occurs without thought, although at times you can consciously control it, such as when you swim under water, sing a song, or blow bubbles. The respiratory rate is the total number of breaths, or respiratory cycles, that occur each minute. Respiratory rate can be an important indicator of disease, as the rate may increase or decrease during an illness or in a disease condition. The respiratory rate is controlled by the respiratory center located within the medulla oblongata in the brain, which responds primarily to changes in carbon dioxide, oxygen, and pH levels in the blood. The normal respiratory rate of a child decreases from birth to adolescence. A child under 1 year of age has a normal respiratory rate between 30 and 60 breaths per minute, but by the time a child is about 10 years old, the normal rate is closer to 18 to 30. By adolescence, the normal respiratory rate is similar to that of adults, 12 to 18 breaths per minute. Q: The normal respiratory rate per minute in adult humans is? Choices: - 6-12 breaths - 0-6 breaths - 18-24 breaths - 12-18 breaths A:
Ans: 12-18 breaths
(Q).
Answer the following question given this paragraph: To see an animation of the lifecycle of a fern and to test your knowledge, go to the website (http://openstaxcollege. org/ l/fern_life_cycle) . Most ferns produce the same type of spores and are therefore homosporous. The diploid sporophyte is the most conspicuous stage of the lifecycle. On the underside of its mature fronds, sori (singular, sorus) form as small clusters where sporangia develop (Figure 25.23). Q: Most ferns produce the same type of spores and are therefore called what? Choices: - seeds - sporozoans - heterosporous - homosporous A:
(A).
homosporous
Ques:Answer the following question given this paragraph: Eukaryotes evolved about 2 billion years ago. Unlike prokaryotes, eukaryotes have a cell nucleus. They have more structures and are better organized. Organelles within a eukaryote can perform certain functions. Some supply energy; some break down wastes. Eukaryotes were better able to live and so became the dominant life form. Q: Unlike prokaryotes, eukaryotes have what? Choices: - cell membrane - golgi apparatus - cell wall - cell nucleus A:

Ans:cell nucleus
Answer the following question given this paragraph: Humid continental climates have warm winters and cold summers. Subarctic climates have cool short summers and very cold winters. Q: What kind of summers do humid continental climates have? Choices: - dry summers - warm summers - wet summers - cold summers A:
cold summers