एक आयताकार खेत की लम्बाई और चौड़ाई में 3:2 का अनुपात है। खेत के चारों ओर मेड़ बनवाने का खर्च ₹ 1.50 प्रतिमीटर की दर से बताइए जब कि खेत का क्षेत्रफल 1.5 हेक्टेयर है।

The body is protected against harmful flu viruses by

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.