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
neonofarm [45]
3 years ago
15

2. How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.

Biology
1 answer:
mart [117]3 years ago
6 0

Answer: The percentage of unknown material has grown in scientists estimates since the 1970’s; the percentage of dark matter has shrunk in scientists estimates since the 1980s

Explanation:

You might be interested in
Which characteristic is shared by all four cells
vaieri [72.5K]
I think it's the nucleas
4 0
3 years ago
What are three characteristics of a sustainable ecosystem?
MissTica
Nutrient cycles, predators&prey and living soil
3 0
3 years ago
Which statements describe thigmotropism? Check all that apply.
emmainna [20.7K]

Answer:

Thigmotropism is a plant's response to touch.

Thigmotropism is a plant's response to an external stimulus.

Thigmotropism can occur quickly or slowly.

Thigmotropism may involve the way in which a plant grows.

Thigmotropism may involve the closing and opening of plant leaves.

4 0
3 years ago
Read 2 more answers
What is the depth range of the transition zone? what is the average temperature for the surface zone? ​
chubhunter [2.5K]

Answer:

don't know man try some one elce

5 0
3 years ago
Give some examples of rocks that would be formed through the process depicted in the figure above.
asambeis [7]
Some examples would be slate, phyllite, and gneiss.
6 0
4 years ago
Read 2 more answers
Other questions:
  • In what two ways did the human population change as a result of the agricultural revolution
    6·1 answer
  • What is the San Andreas Fault?
    9·1 answer
  • What radiation is used in hospitals and how does it cause a problem for staff/workers?
    7·2 answers
  • A white starch solution was poured into a length of dialysis tubing and the ends were tied. The tubing was then dropped into the
    14·1 answer
  • How long have scientists understood the role of DNA in heredity
    8·1 answer
  • Penguins, seals, and tuna have body forms that permit rapid swimming, because _____.
    5·1 answer
  • Meteorologists use isobara on a weather map in order to
    15·1 answer
  • Which of the following human activities reduces biodiversity?
    13·1 answer
  • What are the two main obstacles that early plants had to overcome in order to evolve for life on land
    12·1 answer
  • 1- Acromegaly is a disease in which the bones develop irregularly, which is due to over secretion of PTH?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!