1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Advocard [28]
3 years ago
11

The theories on the origin and expansion of the universe have changed from time to time. Which of these best explains why the th

eories about the universe change over a period of time? (2 points)
new scientific investigations lead to new theories
modern scientists reject old theories in every century
the universe evolves constantly and requires new theories to describe it
the discoveries of all scientists in different centuries have to be incorporated
Biology
2 answers:
butalik [34]3 years ago
6 0

Answer:

new scientific investigations lead to new theories

Explanation:

The investigation into the origin of the universe is a continuous one and new facts or hypothesis keep emerging everyday.

One of the characteristics of scientific theories is that they are subject to changes when new widely tested facts emerge concerning the theory.

<em>Consequently, the existing theories keep getting modified or changed completely as new facts emerge from new scientific investigations. </em>

laila [671]3 years ago
5 0
<span>new scientific investigations lead to new theories</span>
You might be interested in
Corals and the algae that live in coral polyps have a special relationship. Each contributes something that the other needs to s
scoundrel [369]
The coral provides the algae with a protected safe environment (a home) and compounds they need for photosynthesis. The algae in return, produce oxygen and help the coral to remove wastes. Most importantly, zooxanthellae supply the coral with glucose, glycerol, and amino acids, which are the products of photosynthesis.
7 0
3 years ago
Which of these cell organelles would you expect to find in abundance inside a eukaryotic cell that needs to produce a large amou
Eduardwww [97]

Mitochondrion because it’s the powerhouse of the cell.

4 0
3 years ago
What is an explanation of why producers are always found at the lowest tropical level
kupik [55]
Because they supply much energy to the food by preparing their own food because the above one can't prepare it own their own
5 0
3 years ago
Read 2 more answers
How dose uv light affect folate
Ivan

Answer:

 (UV) radiation is with recent research showing that UV radiation has the capacity to degrade folate in human blood and skin.

7 0
3 years ago
Read 2 more answers
In maize, a dominant allele A is necessary for seed color, as opposed to colorless (a). Another gene has a recessive allele wx t
Gelneren [198K]

Answer:

  • 1/2 Aa Wx wx (colored seeds, normal starch)
  • 1/2 aa Wx wx (colorless seed, normal starch).

Explanation:

  • A (colored seed) is dominant over a (colorless)
  • Wx (normal starch) is dominant over wx (waxy)

Both loci are independent.

A <em>Aa WxWx </em>individual was test crossed (crossed with a homozygous recessive <em>aa wxwx</em> individual).

  • The homozygous recessive can only produce <em>a wx </em>gametes.
  • The dihybrid individual can produce two types of gametes, all of them with the same frequency because the genes segregate independently: 1/2 <em>A Wx </em>and 1/2<em> a Wx </em>

<u>The possible offspring resulting from the combination of those gametes is:</u>

  • 1/2 Aa Wx wx (colored seeds, normal starch)
  • 1/2 aa Wx wx (colorless seed, normal starch).

7 0
3 years ago
Other questions:
  • Some bacteria are able to propel themselves through liquid by means of a structure called the
    12·1 answer
  • 6
    5·1 answer
  • Your girlfriend seems quite thin and is a cheerleader so she gets plenty of exercise. She hardly seems to eat when you go out th
    5·2 answers
  • Spread of ides is an example of
    13·1 answer
  • Are enzymes made out of carbohydrates
    15·2 answers
  • Ina concludes that color does influence the attraction of butterflies and moths do you think this is a logical conclusion
    7·2 answers
  • Reduction of O2 to form H20 occurs during
    15·1 answer
  • What is the relaxed form of dna in a cells nucleus?
    8·2 answers
  • Which statement about vacuoles is true?
    11·1 answer
  • Because most cigar and pipe smokers do not ______, as a group they have a lower risk of cancer than cigarette smokers.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!