How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.(1 point)
A.The percentage of ordinary matter has grown in scientists' estimates.
B.The percentage of dark matter has shrunk in scientists' estimates since the 1980s.
C.The percentage of dark energy has shrunk in scientists' estimates.
D.The percentage of unknown material has grown in scientists' estimates since the 1970s.
Here's all the answers :)
1)How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.
The percentage of unknown material has grown in scientists' estimates since the 1970s.
The percentage of dark matter has shrunk in scientists' estimates since the 1980s.
2) Which is evidence for the existence of dark energy?
Supernovae that are moving away at an accelerating rate.
3)How did dark matter affect the development of structures in the early universe?
It seeded the development of galaxies.
moon is correct
MOON IS CORRECT !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!i!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
moon is 100% correct, thanks moon.
Does anyone have the answers??? :((
Thank you sonny boy.
1. How has scientific understanding about the composition of the universe changed over time? Select the two correct answers.
The percentage of unknown material has grown in scientists' estimates since the 1970s.
The percentage of dark matter has shrunk in scientists' estimates since the 1980s.
2. Which is evidence for the existence of dark energy?
Supernovae that are moving away at an accelerating rate.
3. How did dark matter affect the development of structures in the early universe?
It seeded the development of galaxies
100% credit goes to moon
thank you moon <3
yep they right
To determine how scientific understanding about the composition of the universe has changed over time, it is important to consider the latest research and discoveries in the field. However, I can provide some general information to help answer this question.
A. The percentage of ordinary matter has grown in scientists' estimates - This statement is generally accurate. As technology and observational capabilities have improved, scientists have been able to detect and measure more ordinary matter in the universe. This includes the visible matter that makes up stars, galaxies, and all visible objects.
B. The percentage of dark matter has shrunk in scientists' estimates since the 1980s - This statement is not accurate. In fact, the understanding of dark matter has grown significantly since the 1980s. Dark matter is a hypothetical form of matter that does not interact with light or other forms of electromagnetic radiation but exerts gravitational forces on visible matter.
C. The percentage of dark energy has shrunk in scientists' estimates - This statement is not accurate. Dark energy is another hypothetical component of the universe that is believed to be responsible for the observed accelerated expansion of the universe. The understanding and estimation of dark energy have been developed more recently, and its presence and influence in the universe have continued to be supported by observational evidence.
D. The percentage of unknown material has grown in scientists' estimates since the 1970s - This statement is generally accurate. Over time, as our knowledge expands, scientists have come to realize that there are still many mysteries and unknowns in the universe. While advancements in understanding have been made, the existence of various unknown materials, such as dark matter and dark energy, suggests that our comprehension of the complete composition of the universe is still incomplete.
Based on the explanations provided, options A and D appear to be the two correct answers.