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yulyashka [42]
3 years ago
5

When did grass evolve?

Biology
1 answer:
uysha [10]3 years ago
6 0
67 million years ago in the form of phyollths (small sllica flecks in grass that make it difficult to digest)
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Identify a feature that disguishes red and white blood cells?
frutty [35]

Explanation:

blood contains far fewer white blood cells than red blood cells , bud the body can increase the production of white blood cells to fight infection ...

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3 years ago
A plane is traveling at 80 m/s. To prepare for landing, it decreases its speed to 50 m/s in 120 s.
emmainna [20.7K]

Answer:

The deceleration of the plane is 0.25 m/s^{2}.

Explanation:

Deceleration is the converse of acceleration.

From first law of motion, we have;

v = u + at

where: v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.

Thus,

v = 50 m/s

u = 80 m/s

t = 120 s

50 = 80 + 120a

50 - 80 = 120a

-30 = 120a

a = \frac{-30}{120}

  = -0.25

a = -0.25 m/s^{2}

The deceleration of the plane is 0.25 m/s^{2}.

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3 years ago
A substrate-level phosphorylation occurs in the citric acid cycle when _____.
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Substrate level phosphorylation occurred in kreb cycle inform of metabolic reaction that involve the transfer of phosphoryl group to GDP or ADP from another phosphorylated compound which result into formation of GTP or ATP. This process commonly occurs in the cytoplasm of cells during glycolysis and also in the mitochondria during krebs cycle.


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4 years ago
What does it mean when scientists say that living organisms share a universal genetic code?
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When scientists say they share a universal genetic code it means that all organisms it can mean either DNA as the main source of hereditary information in all life forms we know of  or more likely that all organisms we know of use a three base pair code for the synthesis of proteins, DNA produces mRNA. This mRNA is read three base pairs at a time by a ribosome and this is called the genetic code.

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Good morning


The answer is : Your feet

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