Check my answers

posted by .

1. The division of Earth’s history into smaller units makes up the ____.

eras
geologic time scale***
periods
sequence of events

2. Today, some scientists think that ____.

birds evolved from dinosaurs
dinosaurs evolved from fish
birds evolved from amphibians
both a and b***

3. A life-form in the Precambrian time was ____.

cyanobacteria***
humans
reptiles
dinosaurs

4. Which trilobite characteristic did not change through time?

shape of eyes
three-lobed body***
number of body segments
number of spines

5. ____ existed during the Mesozoic era.

Angiosperms
Humans
Birds
both a and c***

  • Check my answers -

    plz someone help

  • science -

    please help me i need to turn it in

  • Check my answers -

    I agree with your answers.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. science

    Scientists debate about the use of fossils as a tool to determine records of various events, such as the vanishing of the dinosaurs or the origin of our ancestors.discuss the role of fossils in helping scientists develop accurate records …
  2. Geology

    Scientists debate about the use of fossils as a tool to determine records of various events, such as the vanishing of the dinosaurs or the origin of our ancestors. Based on what you know of fossils from your textbook and other sources, …
  3. earth, science

    Which of the following statements describes the development of the geologic time scale?
  4. Science help,plz:)

    Okay, these are my last questions of the day.... 1. After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record?
  5. Science help, Ms.Sue

    1. After a rock layer is eroded, which additional event must occur to create an unconformity, or a gap in the geologic record?
  6. science

    1. radioactive decay occurs when atoms A- lose mass * B- join with atoms of another element C- break down to form atoms of another element D- are exposed to chemical weathering 2. if you want to consult the geologic time scale for …
  7. Science- Earth's History- 1 question

    Which of the following events occurred during the Mesozoic era?
  8. Science

    The geologic time scale originally ordered Earth's rocks by: A. absolute age B. relative age*** C. composition D. decades and centuries Where did scientists originally get their information to develop the geologic time scale?
  9. English

    Khianna is preparing an informational presentation for her science class. Her presentation discusses three different theories about what killed the dinosaurs 65 million years ago. The first theory is that an asteriod hit the earth, …
  10. science

    What is the geologic time scale and what are some thing scientists use it for (at least two things)?

More Similar Questions