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
ivolga24 [154]
3 years ago
15

What is the estimated age of Earth? A.4.6x10^6 B.4.6x10^7 C.4.6x10^8 D.4.6x10^9

Biology
2 answers:
sveticcg [70]3 years ago
4 0

Answer:

D: 4.6 x 10^{9}

Explanation:

4.6 x 10^{9} = 4,600,000,000

Earth is approximately, 4.6 billion = 4,600,000,000 = 4.6 x 10^{9}

bulgar [2K]3 years ago
3 0
The estimated age of earth is C
You might be interested in
How does DNA affect genetics?
Basile [38]

Answer:

Over our lifetime, our DNA can undergo changes or mutations that result in differences in the DNA sequence and may affect the proteins that are made. Mutations can occur as a natural consequence of errors in DNA replication or as a result of exposure to environmental factors such as smoking, sunlight or radiation.

Explanation:

5 0
3 years ago
A mass movement that involves the sudden movement of a block of material along a flat, inclined surface is called a ____.
grandymaker [24]
A mass movement that involves the sudden movement of a block of material along a flat, inclined surface is called a SLIDE. 
6 0
3 years ago
Read 2 more answers
A biologist examines a series of cells and counts 160 cells in interphase, 20 cells in prophase, 6 cells in prometaphase, 2 cell
Marrrta [24]

Answer:

M phase: 4.8 hr

Prophase: 2.4 hr

Prometaphase: 0.72 hr

Metaphase: 0.24 hr

Anaphase: 0.84 hr

Telophase: 0.6 hr

Explanation:

Mitosis, also known as M phase, is the process of nuclear division after interphase, which is followed by cytoplasmic division via cytokinesis. Mitosis can be subdivided into the following phases: Prophase,  Prometaphase, Metaphase, Anaphase, and Telophase. In this case, 160 cells are in interphase (for a total of 200 cells), thereby 40 cells are in mitosis >> 200 - 160 = 40 cells. Since the complete cell cycle requires 24 hours, it is possible to calculate the average duration of each phase:

M phase: 40/200 = 0.2 x 24 hr = 4.8 hr

Prophase: 20/200 = 0.1 x 24 hr = 2.4 hr

Prometaphase: 6/200 = 0.030 x 24 hr = 0.72 hr

Metaphase: 2/200 = 0.01 x 24 hr = 0.24 hr

Anaphase: 7/200 = 0.035 x 24 hr = 0.84 hr

Telophase: 5/200 = 0.025 x 24 hr = 0.6 hr

3 0
3 years ago
Water makes up about what percentage of most organisms? A. 50% B. 70% C. 10% D. 30%
aliya0001 [1]

The answer is B: 70%

7 0
3 years ago
Read 2 more answers
Help Help HElp!<br>look at pic<br>I want to say its A but not sure
Wewaii [24]
AB crossed with O produces Iai and Ibi
So out of the choices she would only possibly have type A blood
6 0
3 years ago
Other questions:
  • Give an example of two types of cells that never go through cell division once fully formed.
    8·1 answer
  • What are three types of arthropods ?
    10·2 answers
  • How much of our current energy comes from fossil fuels
    7·1 answer
  • I only have two questions, thank you! One difference between a point mutation and a chromosomal mutation is that ____
    15·2 answers
  • Hello, people of planet earth, I need help with a question for my friend Steve in science class, here on planet Neptune it is pr
    13·1 answer
  • How has human use of salt marshes changed over time?
    11·2 answers
  • Which is a biological effect of the hydrogen bonding between molecules of water
    14·1 answer
  • What is the relationship between changing CO2 emissions and CO2 concentration?
    12·1 answer
  • What is Stromatolites?
    13·1 answer
  • Which part of the brain helps you learn new things in gym class?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!