« previous next »

Author Question: What technology do astronomers use to search for extraterrestrial life? a. space observatories b. ... (Read 226 times)

jho37

  • Hero Member
  • *****
  • Posts: 531
on: Jul 27, 2018
What technology do astronomers use to search for extraterrestrial life?
 
  a. space observatories
 b. radio telescopes
 c. refracting telescopes
 d. reflecting telescopes
 e. FM radio and televisions

Question 2

Stromatolites are rock-like columns composed of layers of fossilized ____.
 
  a. bones and tissue
 b. fungi and planets
 c. extremophile protists
 d. photosynthetic algae
 e. single-celled organisms


frre432

  • Sr. Member
  • ****
  • Posts: 347
Reply #1 on: Jul 27, 2018
Answer to Question 1

b

Answer to Question 2

e


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

jho37

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 27, 2018
Thanks


frre432

  • Sr. Member
  • ****
  • Posts: 347
Reply #3 on: Jul 27, 2018
Welcome :)


« previous next »
 

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

The life cycle of the early diverging moss genus, Sphagnum, illustrating reproductive adaptations th The life cycle of the early diverging moss genus, Sphagnum, illustrating reproductive adaptations th
The life cycle of a typical fern. The life cycle of a typical fern.
Life-history cube, a classification of fish, mammals, and altricial birds based on three dimensionle Life-history cube, a classification of fish, mammals, and altricial birds based on three dimensionle
Map of Mars from Hubble Space Telescope as seen near the 1999 opposition. (North top) Map of Mars from Hubble Space Telescope as seen near the 1999 opposition. (North top)
Phylogeny of the three domains of life Phylogeny of the three domains of life
Technology Technology
Video: Stomach peristalsis & Enterogastric reflex

For a complete list of videos, visit our video library