Drag the correct term to each blood sample. Early one Monday morning, as Mr. Stevens the custodian, walked through the school, he noticed a foot sticking out from under a science
lab bench. Mr. Stevens flipped on the light and saw Mel Brown laying under the lab table. Stevens felt for a pulse. Nothing. He noticed
blood on Mel's head and hands; there were blood spatters on the floor and a larger pool of blood on the floor under Mel's head. Mr.
Sevens dialed 911. The police along with their forensics team arrived shortly before school started. They collected the evidence and took
the body to the crime lab. Using DNA evidence forensics determined that there was two
blood samples at the crime scene: Mel's and an
unidentified sample. The police asked Mr. Stevens for a DNA sample and he immediately gave them one. Some students had told the
police that Mel had been arguing the afternoon before with two of his friends: Carl Smith and Gerald Jones, Mel had apparently done their
science lab work and the boys had refused to pay him, as previously decided. The police decided to collect DNA samples of Carl and
Gerald as well. as The results provided some enlightening evidence; one of the three people tested HAD been at the crime scene! Using STR
evidence, can you identify the person whose blood was found
the scene?who is the killer

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

i hope this : )

picture a world where computers are building made-to-order personalized robotic arms and synthetic organs, drones are circulating above mars! due to the rapid growth of technology, the future has never been more unpredictable, and it presents a huge challenge in education: we are teaching students how to work in a future that we have never been unsure of. it is widely predicted that in eight years’ time, there will be more jobs in the fields of science, mathematics, technology and engineering than in any other discipline. and, as the technology continues to develop, it will soon become clear that addressing social problems will involve more innovative thinking, and analytical and technical knowledge than ever before. undeniably, there are no subjects that encourage innovative and creative thinking, deep thought, problem solving and independence more than the stem subjects. while it is widely commented on that there is a need to reimagine the ways stem subjects are taught in schools by embracing a more interactive and innovative approach to appeal to more students, it should come as no surprise that some of the most reputable educational organizations in the world are already implementing changes to embrace stem. harvard, for example, announced in 2014 that they were increasing their computer science faculty by over 50% and has since introduced computer science as a core subject for all freshmen. the urgency of supporting stem subjects at a young age is becoming more relevant than ever, as adopting a keen interest in the curricula needs to happen early. however, beyond the age issue is one of gender.

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the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.