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MAVERICK [17]
3 years ago
13

Why is the human brain grey?

Biology
2 answers:
alex41 [277]3 years ago
4 0
There is no pigment in the brain, so it is in it's natural colour, grey.
olga55 [171]3 years ago
4 0
The human brain is grey because it has no pigment, which gives things color.
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What is the phylum of lizard?​
Westkost [7]

Lizard belongs to chordate phylum.

hope it helps you.

7 0
3 years ago
After the bank robbery, the very frightened people probably experienced increased activation of the sympathetic nervous system,
nata0808 [166]
The answer is Adrenaline

Adrenaline is a stress hormone secreted by the adrenal glands and some other neurons when a person is frightened, excited or generally in stress.

It prepares our body for it's 'fight or flight' mechanism and tightens muscles for exertion.

After a bank robbery, most people feel a rush of adrenaline.
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7 0
3 years ago
▪️Chapter - The fundamental unit of life
Rashid [163]

Answer:

The difference between Prokaryotic cell and Eukaryotic cell are;

\begin{array}{lll}&\underline {\text {Prokaryotic}}& \underline {\text {Eukaryotic}}\\ \\ \text {Nuclear \ membrane \ and \ nucleus} & \text {No \ true \ nucleus \ or}    & \text {Has \ a \ true \ nucleus} \\& \text {nuclear \  membrane} & \text {nucleoli \ and \ nuclear \ membrane}\\\\ \text {Membrane \ bound \ cell \ organelle} & \text {None &Present} \\\\ \text {Chromosome \ number \ and \ shape} & \text {One} & \text {Several, more \ than \ one} \end{array}

Explanation:

Prokaryotic cells

The plasma membranes surround prokaryotic cells, however, within their cytoplasm, there are no organelles bound to the membrane and there is no nucleus in the prokaryotic cell which differentiates it from the eukaryotic cells

Eukaryotic cells

Eukaryotic cells also have plasma membranes, ribosomes and cytoplasm. Eukaryotic cells also have membrane-bound nucleus, membrane bound organelles, such as chloroplast, mitochondria, endoplasmic reticulum, and Golgi apparatus which together differentiates it from a prokaryotic cell

4 0
3 years ago
What do scientists often use to study microevolution?
Allisa [31]
They are known as evolutionary biologists. Strictly speaking, anthropology is split up into a number of disciplines - physical (sometimes known as biological) anthropology is the study of evolution as it relates to human beings. Further to this, scientists who study evolution in the fossil record are known as evolutionary palaeobiologists or simply palaeobiologists.
6 0
3 years ago
Read 2 more answers
⚠️⚠️⚠️THE ANSWER IS WOOD!! Trust me, I asked my biology teacher which ones I got wrong on the unit test and she sent me screensh
exis [7]

Answer:

Yes, the answer is wood.

Explanation:

Wood is a natural material and is subject to variations in composition and moisture content. Therefore the energy from burning it or gasifying it would likewise be variable.

not sure what the purpose of this question was, but here's the explanation anyway! have a nice day.

6 0
2 years ago
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