Why are the mass extinctions followed by a burst of speciation in .pdf

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Why are the mass extinctions followed by a burst of speciation in the taxa that survive? Name three types of key adaptations of early mammals that may have allowed them to survive the dominance of dinosaurs. Why are the mass extinctions followed by a burst of speciation in the taxa that survive? Name three types of key adaptations of early mammals that may have allowed them to survive the dominance of dinosaurs. Name three types of key adaptations of early mammals that may have allowed them to survive the dominance of dinosaurs. Solution Mass extinctions are generally followed by a burst of speciation in the taxa that survive as the earth system succession that may follow in this case drives the ever-changing ecological stage on which species evolve, restructuring ecosystems and setting long-term evolutionary trajectories. The lifestyles of mammals might have given them; the advantage about 65 million years ago; when the asteroid struck; leading to mass destruction. Mammals that lived in burrows or in aquatic environments; might have been shielded from the intense heat of the impact of the asteroid. After the impact was over these mammals might have come back and led a normal life. Scarcity of food might have been the limiting factor for dinosaurs after the impact but the more generalized tastes of mammals might have allowed them to hang on. The diversity of mammals might have also supported their chances of survival and adaptation..

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TO FOLLOW THESE SLIDES you will learn about the adaptive radiations involve in evolution . yo will learn about the parallel adaptations and its types speciation role in the evolution factors key innvations to imrove the article involving examples Founder events Adaptive plasticity process of adaptive radiation Factors promote adaptive radiations Factors underlying adaptive radiations defined by 0.S OSBORN ecological space geological climatological Islands examplrs: 1.Darwin Finches 2.Cichlid fish genome -adaptive evolution, Stanford scientists 3.Anolis Lizards Factors promote adaptive radiations 1.Generally speaking, adaptive radiations occur when new, unoccupied ecological niches become accessible to a founder population. This can happen after a mass extinction during which the previous occupiers of those niches died out. t can also happen when a colonizing species arrives at an island. (For instance the ancestor of the honeycreepers in Hawaii, or of Darwin's "finches" in the Galapagos) Honey creeper Change feeding habitat At least 56 species of Hawaiian honeycreepers known to have existed, although all but 18 of them are now extinct. Lack of competition. When a species enters an adaptive zone, it is poorly equipped to compete with species that have become adapted to the same niche. For example, mudskippers are fish that are making a living on land, but they are marine fish and they don't have to compete against frogs and salamanders, which are restricted to fresh water. That is why we don't see freshwater mudskippers. process of adaptive radiation Ecological Release Colonization of species. Taxon cycle Habitat varying as population expand- species dispersal. Adaptive plasticity Phenotypic plasticity(behavior change) Property of an individual or genotype that may be adaptive, maladaptive or neutral with regard to an individual's fitness. The particular way an individual's (or genotype's) phenotype varies across environments can be described as a reaction norm (Single genotype-phenotypic expression) Speciation in adaptive radiation Founder events

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implemement the game.cpp by the header file given. And create main.c.pdf

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//Ifgqueue.h #ifndef LFGQUEUE_H #define LFGQUEUE_H #include \"player.h\" class LFGQueue { public: LFGQueue(int scrimmage_threshold); void add_player(Player* p); bool remove_next_group(Player** players); bool remove_next_scrimmage(Player** players); int player_count(); int position(Player* p); private: class Node { public: Player* p; Node* next; Node* prev; }; void remove_node(Node* n); Node* head; Node* tail; int scrimmage_threshold; int count; }; #endif //************************************************************************** //main.cpp #include #include #include #include #include #include \"lfgqueue.h\" using namespace std; void permute(Player** players, int len) { for (int i = 0; i < len; ++i) swap(players[i], players[i + rand() % (len-i)]); } int main() { // Setup for testing srand(2017); Player* group[3]; Player* scrimmage[6]; Player daria(\"Daria\", Player::Defender); Player daniela(\"Daniela\", Player::Defender); Player diego(\"Diego\", Player::Defender); Player hector(\"Hector\", Player::Hunter); Player hugo(\"Hugo\", Player::Hunter); Player henri(\"Henri\", Player::Hunter); Player berta(\"Berta\", Player::Bard); Player bernardo(\"Bernardo\", Player::Bard); Player brigida(\"Brigida\", Player::Bard); // Test that everything compiles and queues // construct without issue. LFGQueue q1(3); // Test when queue contains a single complete group in // in an undesired order (Bard, Hunter, Defender) q1.add_player(&bernardo); q1.add_player(&hugo); q1.add_player(&daria); assert(q1.player_count() == 3); assert(q1.position(&bernardo) == 1); assert(q1.position(&hugo) == 2); assert(q1.position(&daria) == 3); group[0] = group[1] = group[2] = 0; assert(q1.remove_next_group(group)); assert(group[0] == &daria); assert(group[0]->name == \"Daria\"); assert(group[0]->role == Player::Defender); assert(group[1] == &hugo); assert(group[1]->name == \"Hugo\"); assert(group[1]->role == Player::Hunter); assert(group[2] == &bernardo); assert(group[2]->name == \"Bernardo\"); assert(group[2]->role == Player::Bard); assert(q1.player_count() == 0); cout << \"20\\% earned.\" << endl; // Test what happens when not enough group group[0] = group[1] = group[2] = 0; assert(!q1.remove_next_group(group)); assert(group[0] == 0); assert(group[1] == 0); assert(group[2] == 0); for (int i = 0; i < 6; ++i) scrimmage[i] = 0; assert(!q1.remove_next_scrimmage(scrimmage)); for (int i = 0; i < 6; ++i) assert(scrimmage[i] == 0); cout << \"25\\% earned.\" << endl; // Test what happens when two full groups of players // not in the right order (Def, Hunt, Hunt, Bard, Bard, Def) q1.add_player(&daria); q1.add_player(&hector); q1.add_player(&hugo); q1.add_player(&bernardo); q1.add_player(&berta); q1.add_player(&daniela); assert(q1.player_count() == 6); assert(q1.position(&daria) == 1); assert(q1.position(&hector) == 2); assert(q1.position(&hugo) == 3); assert(q1.position(&bernardo) == 4); assert(q1.position(&berta) == 5); assert(q1.position(&daniela) == 6); group[0] = group[1] = group[2] = 0;.

Ifgqueue.h#ifndef LFGQUEUE_H #define LFGQUEUE_H#include pl.pdf

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