Which of these may be a matter of serious concern for an ENVIRONMENTALIST?
1.increase in tigers which is a threat to herbivourous animals
2.involment of more tribal people in the conservation than proffesionals
3.commercial extraction of timber and other forest produce to meet urban demands
4.exploitation of migrated labourers by contractors in a construction site

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Pulmonary arteries carry highly oxygenated blood. true or false?

Which statement is not an accurate description of meiosis? a) meiosis produces offspring that are genetically diverse. b) meiosis produces offspring that are identical to the parent. c) in sexual reproduction half of the genetic material comes from the father (sperm) and half of the genetic material comes from the mother (egg). d) meiosis decreases the number of chromosomes by half so that when a sperm fertilizes an egg, the resulting zygote has the correct number of chromosomes.