Answer:
1. A massive star depletes its nuclear fuel; gravity overpowers the star; supernova occurs; core of star collapses
2. black hole; gravitational pull
3. The center of the Milky Way
Explanation:
Answer: d. Extracellular matrix was discovered more than 20 years ago.
Explanation:
According to biological sciences, the extracellular matrix is a matrix that consists of three dimensional network of extracellular macromolecules such as enzymes, collagen and glycoproteins which provide structural and biological support for surrounding cells as well.
It is found that it is discovered over 20 years ago in the matrix formed in the mouse EHS sarcoma. Therefore, correct answer is (d).
<span>The synthesis of proteins takes two
steps: transcription and translation. Transcription takes the
information encoded in DNA and encodes it into mRNA, which heads out of
the cell's nucleus and into the cytoplasm. During translation, the mRNA
works with a ribosome and tRNA to synthesize proteins.</span>
Being a woman myself, the answer is the Fallopian tubes.
A biodiversity hot spot is a relatively small region with a significant number of indigenous species and endangered or vulnerable species.
Ecologically distinct areas with extraordinarily high species densities are known as biodiversity hotspots, and they are thus top priorities for nature conservation. The term "biodiversity" has several meanings. A species area must satisfy two severe requirements in order to be considered a biodiversity hotspot: It must have a significant proportion of plant life that is endemic, or found nowhere else on the earth, and at least 1,500 vascular plants. In other terms, a hotspot is unique.
learn more about species here:
brainly.com/question/25939248
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