Why does the heart start pumping blood to all the cells so early in pig/human development

Through the process of photosynthesis, light energy from the Sun was transformed into chemical energy in the form of sugar within a strawberry plant.

What is melanin and what is its role in the epidermis?

Which cells of the immune system have the capacity to produce antibodies during an immune response? t cells plasma cells pluripotent cells memory cells?

What is the term that describes the softness or harshness of the ride?

Why do scientists only test one variable at a time

Why are the oceans becoming acidic? A) Because of global cooling B) Because of excess carbon dioxide in the atmosphere reacting with water and forming carbonic acid C) Because of the dissolution corals (calcium carbonate) D) Because of alkaline rain

What is the possible genotype and phenotype for the dominant trait circular flower and recessive trait square flower

What is representative organism?

What multipies to get - 12 but also has a sum of 4

What is the relationship between stewardship and conservation?