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
Anestetic [448]
2 years ago
14

What average speed, most nearly, is required to run a 4 minute mile? (1 mile = 1.609 km), (1 min = 60 seconds), (Av Speed = Dist

ance / Time)
Biology
1 answer:
Rasek [7]2 years ago
4 0

Answer:

gfdfh up jejjdjjdhhdjjdldnnckbhx

You might be interested in
The role of enzymes in biological systems is to catalyze chemical reactions. In 1894, chemist Emil Fischer proposed the lock and
ycow [4]
Provided that there's no diagram, most molecules have particular areas on the molecules, called the "active area" that act as a lock to a particular substrate's molecular structure, providing the key. 
An enzyme's active area is only able to be "unlocked" by a certain substrate's "key". 
6 0
3 years ago
Read 2 more answers
When does fetal erythrocyte production shift from the liver to the bone marrow?
vichka [17]

Answer: After seven months.

Explanation:

The blood carries various substances that must be transported from one part of the body to another. Red blood cells are an important component of the blood because their function is to carry oxygen to the body tissues and exchange it for carbon dioxide, which is carried and removed by the lungs.

Erythropoiesis is the process of red blood cell (erythrocyte) production. It is stimulated by a decrease in O2 in the circulation, detected by the kidneys, which then secretes the hormone erythropoietin. This hormone stimulates the proliferation and differentiation of red blood cell precursors, which triggers an increase in erythropoiesis in hematopoietic tissues and ultimately in the production of red blood cells. <u>In adults, red blood cells are formed in the red bone marrow.</u>

In early developing fetuses, erythropoiesis occurs in the mesodermal cells of the yolk sac. In the third or fourth month, erythropoiesis moves to the liver. After seven months, erythropoiesis occurs in the bone marrow.

6 0
3 years ago
QUESTION 9
zhannawk [14.2K]
A quadrant streak is the answer
8 0
3 years ago
Time on earth is divided into 6 eras. Three are considered "Precambrian" Which eras are NOT Precambrian?
bulgar [2K]

Explanation:

<u>the  Paleozoic Era </u>

The Precambrian era describes a period of time that pre-dates Cambrian. This time typically references the entire period of the history of earth before the formation of rocks containing identifiable fossils occurred. It covers the majority of Earth’s history and is divided into the Hadean, Archean and the Proterozoic era.

Just before the Cambrian eruption, in the  Paleozoic Era the environment was oxygenated, culminating in an explosion of new life in the Proteozoic Eon (2500-541 million years ago) in the form of primitive blue-green algae named cyanobacteria and oxygen based species. Multicellular species followed later, along with structure at higher levels, and complex life. Oxygen levels grew gradually over this period of time, from low levels.

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

8 0
2 years ago
Question 4
fenix001 [56]

Answer:

Explanation:

herbivore and released as heat

7 0
3 years ago
Read 2 more answers
Other questions:
  • What are the similarities between the onion and white fish cells?
    10·2 answers
  • Which is a density-independent factor in controlling a population? A. Floods B. Access to light C. Water supply D. Predators
    7·1 answer
  • Volcanic ash and sulfur dioxide spewed out of Mt. Pinatubo in 1991. These materials can reflect incoming solar radiation. Over t
    13·1 answer
  • What energy yield (in molecules of ATPATP per molecule of monosaccharide) would you predict for the bacterial catabolism of raff
    14·1 answer
  • If when I was a young lad, I was bitten by a turtle, can I still drink orange juice?
    13·1 answer
  • Rosa has a vegetable garden. She places earthworms, which are decomposers, in the garden soil. What is Rosa most likely trying t
    13·1 answer
  • 7. Which of these are characteristics of viruses? (Select all that apply.)
    11·1 answer
  • Vertebrates can be classified in.
    14·2 answers
  • Porque se dice que los receptores son especificos y tienen adaptabilidad?
    11·1 answer
  • How can databases of variants be used to help pinpoint a disease-causing mutation?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!