When green sea turtles travel over 1,400 miles of open ocean to the Ascension Island, they are exhibiting
A. map sense.
B. direction sense.
C. timely sense.
D. compass sense.
E. No one knows exactly how they do this.
Answer: A
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Greenhouse gases
A) such as CO2, CH4, and N2O trap infrared radiation and heat the Earth. B) such as CO2 increase plant and animal growth, resulting in more heat production on Earth. C) such as CO2 and O3 (ozone) interact with UV light and heat the Earth. D) such as CO2, CH4, and N2O destroy O3 (ozone) and allow more UV light to enter the atmosphere, thus increasing the temperature of the Earth's surface.
The “naked” seeds of conifers develop ____
a. on scales of the ovulate cones b. on scales of pollen cones c. in microsporangia of pollen cones d. in archegonia of ovulate cones e. in antheridia of pollen cones
The stimulus for contractions of the uterus to bring about birth is the hormone
A. estrogen. B. follicle stimulating hormone. C. oxytocin. D. luteotropic hormone.
Gingivitis is
A. caused by Streptococcus mutans. B. primarily caused by anaerobic oral flora. C. also called NUG. D. erosion of tooth enamel causing a lesion. E. None of the choices are correct.