multiple choice:
63. in a food web, which type of organism receives energy from every other organism in the food web? (a) producers (b) secondary consumers (c) decomposers (d) herbivores.
64. a snake eats a frog that ate an insect that fed on the plants at the edge of a pond. the snake is a: (a) primary consumer (b) secondary consumer (c) tertiary consumer (d) quaternary consumer.
directions: use the diagram to the right to answer questions 65 - 78.
65. what element is being recycled in this diagram?
66. identify \a\ in the diagram.
67. identify \b\ in the diagram.
68. identify \c\ in the diagram.
69. identify \d\ in the diagram.
70. identify \e\ in the diagram.
71. identify \f\ in the diagram.
72. identify \g\ in the diagram.
73. in what process do green plants convert carbon dioxide and water into molecules of glucose?
74. all living things convert molecules of glucose into molecules of atp. what is the name of this process?
75. an imbalance in this cycle can lead to heat being trapped in earth’s atmosphere. this is known by what name?
76. why do all living things need carbon?
77. what process removes carbon dioxide from the air?
78. list two human activities that increase the levels of carbon dioxide in the air.

Question

Accepted Answer

### Question 63
# Brief Explanations:
Decomposers break down dead organisms (from all trophic levels) and organic matter, obtaining energy from them. Producers get energy from sunlight, secondary consumers from primary consumers, and herbivores (primary consumers) from producers. So decomposers receive energy from every other organism.
# Answer:
(c) decomposers

### Question 64
# Brief Explanations:
Plants are producers (trophic level 1). The insect that eats plants is a primary consumer (level 2). The frog that eats the insect is a secondary consumer (level 3). The snake that eats the frog is a tertiary consumer (level 4).
# Answer:
(c) tertiary consumer

### Question 73
# Brief Explanations:
Photosynthesis is the process where green plants use carbon dioxide, water, and sunlight to produce glucose (and oxygen). This is a key process in the carbon cycle and plant energy production.
# Answer:
Photosynthesis

### Question 74
# Brief Explanations:
Cellular respiration is the process by which all living organisms (plants, animals, etc.) break down glucose (and other organic molecules) to produce ATP, which is used for energy. It occurs in cells and involves oxygen (aerobic) or not (anaerobic), but the main process for ATP from glucose is cellular respiration.
# Answer:
Cellular Respiration

### Question 75
# Brief Explanations:
The greenhouse effect occurs when certain gases (like carbon dioxide, methane) in the atmosphere trap heat, preventing it from escaping into space. An imbalance (too much of these gases) leads to more heat being trapped, causing global warming.
# Answer:
Greenhouse Effect

### Question 76
# Brief Explanations:
Carbon is a key component of organic molecules (like carbohydrates, proteins, lipids, nucleic acids) that make up living organisms. These molecules are essential for structure, energy storage, genetic information, and metabolic processes. So all living things need carbon to build these vital organic compounds.
# Answer:
Carbon is a key component of organic molecules (carbohydrates, proteins, lipids, nucleic acids) that are essential for life processes (structure, energy, genetics, metabolism).

### Question 77
# Brief Explanations:
Photosynthesis, performed by green plants (and some other organisms like algae), uses carbon dioxide from the air, along with water and sunlight, to produce glucose and oxygen. This removes carbon dioxide from the atmosphere.
# Answer:
Photosynthesis

### Question 78
# Brief Explanations:
Burning fossil fuels (coal, oil, natural gas) for energy releases large amounts of carbon dioxide. Deforestation reduces the number of plants that can perform photosynthesis (removing CO₂), and also when trees are burned or decompose, they release CO₂. These are two common human activities increasing atmospheric CO₂.
# Answer:
1. Burning fossil fuels (e.g., coal, oil, gas) for energy.
2. Deforestation (cutting down trees, reducing photosynthesis and releasing CO₂ from decomposed/burned trees).

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QUESTION IMAGE

Question

Explanation:

Question 63

Answer:

Question 64