Which among the following statements about tetrad is true? 1) Two chromosome
2) Four chromatid
3) Two kinetochore
4) Four centromere
5) Formed in zygotene and clearly appears in pachytene
6) Formed by the formation of synaptonemal complex

A. All are correct
B. 1,2,5,6 are correct
C. 1,2,3,5 are correct
D. 1,2,3,4,5 are correct

Vegetation that grows along the floors of tropical and temperate forests is called undergrowth. how is the undergrowth of a tropical rain forest most likely to differ from the undergrowth of a temperate forest? a. a tropical rain forest's undergrowth most likely experiences periods of dormancy during colder weather. b. a tropical rain forest's undergrowth most likely experiences periods of dormancy during rainy weather. c. the undergrowth of a tropical rain forest most likely requires less sunlight. d. the undergrowth of a tropical rain forest most likely requires more sunlight.

The pelican's beak is adapted for in .

Some scientists argue that global warming is related to buming fossil fuels to produce energy o increased use of fertilizers loss of forested areas a of the above