The index fossils have a shorter time period and wider geographical distribution of fossils.
An Index fossils refers to class of fossils that had a wide geographical distribution and they were present for a comparatively shorter period of time.
They helped in the construction of geological periods that are commonly used today.
Thus, the index fossils have a shorter time period and wider geographical distribution of fossils.
Therefore. the Option B is correct.
Read more about Index fossils
Answer:
Option (2)
Explanation:
Index fossils are defined as those fossils that had a wide geographical distribution and they were present for a comparatively shorter period of time. They had great significance in the field of paleontology. It helped in the construction of geological periods that are commonly used today. It basically helped in forming the geological time scale. The age of the rocks in which these fossils were embedded is easily determined by using radioactive dating techniques.
Thus, the index fossils have a shorter time period and wider geographical distribution of fossils.
Hence, the correct answer is option (2).
The correct answer is option B
The mammals are further classified into groups in terms of development of the offspring. There are various types of mammals that development in different way.
Placental Mammals:
The embryo grows inside the body of the mother by the help of placenta which aids in the nourishment of the embryo. After birth, the mother cares for the young ones.
Marsupials:
They lack placenta and in place of placenta they have marsupium that provides nourishment to the young ones after birth. This is a pouch found in the body of the mother which acts as the protective covering of the embryo in which further development of the young ones takes place.
Monotremes:
These kind of mammals lay eggs, eggs are hatched and the young ones lick the milk from the abdomen of the mother.
Answer:
To continue the species!!
Explanation:
Good luck on the rest of the test!
Answer:
1.Embryo is an underveloped form of the bird at its early state of development usually few weeks old like a week.
2.Shell acts as it's outer covering.
3. Shell memberance acts as a semipermeable memberance for substances to leave or enter the Shell.
4. Air Sac contains a means of respiration for the Embryo.
5. Albumen is the part of the egg reach in protein or the white part you see after cooking.
6. Yolk contains the nutrient
7. Yolk Sac contains yolk
8. Amnion acts as shock observer, liquid suspension of the embryo and as a waste absorber.
9. Chorion is the outer embryonic memberance.
10. Alantios is a memberance that contains blood vessels that feeds the embryo,
Explanation:
Refer to the answers memberance is usually a surface that is permeable to certain substances.
B: completely change the type of workout she is doing.
C: change her mindset.
D: avoid exercises with excess repetition.
the correct answer is D
Answer:
D: avoid exercises with excess repetition.
Explanation: