The correct option is B.
Harry Harlow was an American psychologist, who through his study proof that children need love and affection to develop normally. He demonstrated this by using rhesus monkey babies, who are taken away from their mothers immediately after birth. In place of their real mother, Harry provided two surrogate mothers instead and allow the monkey to chose any one they prefer. The first surrogate mother was made of wire and monkeys can get food from her while the second surrogate mother was made of soft terry cloth but the monkey can not get any food from her. Harry observed that the monkeys prefer to stay with their terry cloth mother, which provide comfort and security than with the one made of wire. The monkeys only go to the wire mother when they are hungry.
Answer:
Oxygen
Explanation:
During photosynthesis, oxygen is released. I found this from a quizlet.
<h2>Answer:</h2>
Because cell structure is not uniform from every side and in every section.
<h3>Explanation:</h3>
A cell is a unit of life and it contains all the structure which are important for the functions of a life.
Cell contains nucleus for genetic material storage and replication. It contains mitochondria for respiration and ribosomes for protein production. Apart from these structures it contains golgi apparatus, endoplasmic reticulum, lysosomes and cell membrane. Except cell membrane their structures are not uniformally distributed.
That's why biologists often cut several sections from a cell to find out about its structure.
Sedimentary rocks do not undergo heating it’s metamorphic rocks that do.
Answer: reptiles are ectothermic , while Amphibians are endothermic
Explanation:reptiles and Amphibians are vertebrate.reptiles are a group of air breathing vertebrates that have internal fertilization and scaly bodies.some difference between Amphibians and reptiles include
1)the presence of dried scale in reptiles to prevent water loss.in Amphibians, their skin is smooth and moist and without scale
2)reptiles have more powerful jaws
3) internal fertilization is in reptiles while fertilization is usually external in Amphibians
4)the Amphibians respire by gills, lungs , mouth or through their most skin but reptiles respire through the lungs.
But Reptiles are ectothermal and so are Amphibians
They are both terrestrial and aquatic organisms.they both have separate sexes.
Examples of Amphibians are salamander and frog.example of reptile are turtle and alligator
