Q: What  supports life, and is also needed for the water cycle and weather?    Choices:  - fossil fuels  - oxygen  - greenhouse gas  - atmosphere  A:
atmosphere
(Question)
Q: What is the main cause of outdoor air pollution?    Choices:  - methane from livestock  - aerosol spray  - chimneys  - burning of fossil fuels  A:
(Answer)
burning of fossil fuels
Ques: Q: What type of response do signal transductions within target cells bring about?    Choices:  - resporatory  - bacterial  - psychological  - physiological  A:
Ans: physiological
(Q).
Q: Through which organ do hookworm larvae enter the human body?    Choices:  - through the lungs  - through the rectum  - through the mouth  - through the skin  A:
(A).
through the skin
Ques:Q: What are algae that live in colonies of hundreds of cells called?    Choices:  - chlorophyta  - euglenids  - rhodophyta  - volvox  A:

Ans:volvox
Question: Q: Light is energy that travels in the form of what type of wave?    Choices:  - seismic  - molecular  - particle  - electromagnetic  A:
Answer:
electromagnetic