<u>Answer:</u>
Approximately, the oldest stromatolites are 3.6 billion years old on earth.
<u>Explanation:</u>
- Stromatolites is not only oldest earths fossil but conspiracy in that they are singular visual portal in deep time on earth.
- It is defined as laminated accumulation structure that is they stick up above sea floor .
- Stromatolite buildings includes oldest fossils which are 3.5 billions old when the earth were too unfriendly to support life.
- The study of fossil age, evolutionary, method of formation are known as paleontology.
- These specimens are considered as old fossils which are around 3.4 to 4.1 billions years old.
Answer:
C
Explanation:
During their development, many organisms look similar, suggesting that very different organisms may have a common ancestor. - Think of the human fetal neural / spine development which mirrors other species.
Answer:
A. The sun
Explanation:
The sun, because there has been theory’s of the sun being able to heat earth from there being a lot of iron in the middle of earth
Answer:
Male (X Chromsome)
Explanation:
The mother is usually homozygous, meaning she has two of the same chromosome, so her offspring will get the same chromosome from her regardless. However, the father is heterozygous, meaning he has different chromsomes. Him passing down one or the either will determine the sex.
For example, in humans the mother passes the X, and then the father determines if it is a boy (passes down Y), or if it is a girl (passes down X).
A starfish has zero brains bes cause their nervous system is simple. Hope this helps!