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stira [4]
3 years ago
14

Which of the following is not a component of the skeletal system?

Biology
1 answer:
ZanzabumX [31]3 years ago
7 0

Answer:Blood

Explanation:Bones contain bone marrow. Red and white blood cells are produced in the bone marrow. Protects and supports organs: Your skull shields your brain, your ribs protect your heart and lungs, and your backbone protects your spine.

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1.
Gala2k [10]
I think it would be the second one because some think that there is enough evidence and some do not.
3 0
3 years ago
Most of Earth's energy comes from the Sun. Where does the rest come from?
ki77a [65]

Answer:

The answer is nuclear fusion

Explanation:

Solar energy is created by nuclear fusion that takes place in the sun. Fusion occurs when protons of hydrogen atoms violently collide in the sun's core and fuse to create a helium atom.

6 0
2 years ago
Help................. ​
Karo-lina-s [1.5K]

Answer:

Autotrophs are organisms that use light energy or energy stored in chemical compounds to make their own food.

1st order heterotrophs are organisms that eat only plants

2nd order heterotrophs are organisms that eat herbivores

3rd order heterotrophs: organisms that eat herbivores and other carnivores

Top group: carnivores

Explanation:

Producers are named as such because they produce their own food either by photosynthesis or chemosynthesis. These organisms are called autotrophs and include plants.

There are various levels of consumers. The first is first order heterotrophs, which feed on the producers. These are herbivores and include, for example, a deer feeding on grass.

The next is second order heterotrophs, which feed on the first order heterotrophs. E.g. an owl eating a mouse. These are carnivores

The next layer are also carnivores, third order heterotrophs which eat second order heterotrophs, for example a lion eating a zebra.

4 0
3 years ago
What did the scientist study with his microscope?
Novay_Z [31]
I found the answer to be cells
6 0
3 years ago
Classify each statement based on whether it describes prokaryotes only, eukaryotes only, or can describe both prokaryotes and eu
Phantasy [73]

Answer:

unicellular - both prokaryotes and eukaryotes

contain mitochondrion - eukaryotes only

are generally less than 2 pm - Prokaryotes only

multicellular - eukaryotes only

lack membrane-bound organelles - prokaryotes only

Explanation:

Prokaryotes are generally unicellular, that is, they are made up of single cells only. However, there are unicellular and multicellular eukaryotes with some eukaryotes like humans and advanced plants having as many as millions of cells.

Prokaryotes generally lack nucleus and other membrane-bound organelles such as chloroplast and mitochondrion. Eukaryotes on the other hand have nucleus and membrane-bound organelles such as mitochondrion and chloroplast.

When it comes to size, prokaryotes are generally small and microscopic while eukaryotes consist of both microscopic and macroscopic cells or organisms. However, prokaryotes are generally smaller than microscopic eukaryotes.

7 0
3 years ago
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