Pls help!! Scientists have observed a sudden explosion in the sun followed by rapid changes in the sun's brightness. Which of these events would most likely occur due to this solar condition? (2 points) Group of answer choices increase in atmospheric pollution on Earth change in Earth's climatic pattern change in wind velocity increase in number of solar eclipses

Which is an advantage of having memory cells when a pathogen is encountered for a second time. a) the memory cells are what proliferate into clones of cells in response to the binding of an antigen. b) memory cells are vital to the primary immune response in that they immediately recognize pathogens even at the first encounter. c) memory cells are essentially effector cells that are short lived and attack antigens even without having a receptor specific to that antigen. d) it ensures that more lymphocytes with a receptor specific to a particular antigen will be present than in a host that had never encountered that pathogen.

This rapid change in species that rarely leaves behind fossil evidence is referred to as

Ihave a question. diplontic animals usually produce both eggs or sperm which are :