Q: Which two body systems work together to transport oxygen to the cells? OPTIONS:
- skeletal and respiratory
- digestive and respiratory
- respiratory and circulatory
- respiratory and reproductive
A: respiratory and circulatory
A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?
OPTIONS:
- Urban development near the coast
- Commercial harvesting from the ocean
- Climate change on Earth
- Acid precipitation over the oceans

Commercial harvesting from the ocean
Q: Which of the following best describes an atom? ---- OPTIONS:
- protons and electrons grouped together in a random pattern
- protons and electrons grouped together in an alternating pattern
- a core of protons and neutrons surrounded by electrons
- a core of electrons and neutrons surrounded by protons

A: a core of protons and neutrons surrounded by electrons
The human body is composed of different systems made of specialized cells, tissues, and organs. Each of these structures has a specific function that aids in the survival of the human species. Which organs are used in reproduction?
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OPTIONS:
- brain, spinal cord, and eyes
- lungs, esophagus, and heart
- mouth, stomach, and gallbladder
- ovaries, uterus, and fallopian tubes

ovaries, uterus, and fallopian tubes
Question:
Rocks found on Earth are classified as sedimentary, metamorphic, or igneous based on
OPTIONS:
- where the rocks were found.
- how the rocks were formed.
- the composition of the rocks.
- the color and shape of the rocks.
Answer:
how the rocks were formed.
[Q]: The longitude of a location determines which time zone it is in. Different time zones are the result of
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OPTIONS:
- Earth's rotation
- Earth's revolution
- the Moon's rotation
- the Moon's revolution
****
[A]:
Earth's rotation