subject
Biology, 28.06.2019 13:00 Tripz3005

Based on the information given below, about how many trips around the milky way has the sun made since the emergence of life on earth? age of earth: 4.5 billion years first life on earth: 3.5 billion years ago orbital period: 250 million years orbital speed: 220 km/s distance to galactic center: 30,000 light-years a. 1.3 b. 5 c. 14 d. 18

ansver
Answers: 2

Other questions on the subject: Biology

image
Biology, 22.06.2019 01:20, josephrosanne18
Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen
Answers: 2
image
Biology, 22.06.2019 13:20, hinacat87
Which of the following determines the specificity of a dna probe? a. type of radiation b. level of enzymatic activity c. number of neutrons d. complementary base pairing
Answers: 1
image
Biology, 22.06.2019 15:00, dlatricewilcoxp0tsdw
How do temperature and salinity affect deepwater currents? they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water.
Answers: 1
image
Biology, 22.06.2019 17:00, bessieyounger1211
Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.
Answers: 1
You know the right answer?
Based on the information given below, about how many trips around the milky way has the sun made sin...

Questions in other subjects: