Answer:
C. as a molecule of ferretin
Explanation:
Answer:
Its number 4 , After billions of years, cyanobacteria turns into iron; the iron beds are remnants from cyanobacteria. its 7th grade science.
Explanation:
The portion of the Moon's surface that cannot be directly observed from Earth
These are the answers to the following questions:
1. In what type of rocks would geologists most likely find evidence of past life forms?
-igneous rocks
2. The physical, chemical and biological laws that opeate today have also operated in geologic past. This statement relates to the principle of
-cross-cutting relationships
3. In general, the law of superstition states that in an underformed sequence of sedimentary rocks, each layer is
-older than the one below it
4. If a layers of sandstone is in contact with a mass of granite that contains small pieces of the sandstone, which rock is older?
-It is not possible to determine which rock is older from this information
The main responsible for the delay among the atrial and
ventricular contractions is the action potential conduction velocity of the AV
node cells. If the atria and ventricles contract simultaneously, atria cannot
give any help in filling the ventricles, which is needed, especially in those
with stiff ventricles as in the elderly. Hence atria have to contract first and
then the ventricles.
