Answer:The correct answer is option (b).
Explanation:
Properties of magnetic lines:
Option (b) is correct as magnetic field lines cannot be directly observed.
b. heredity
c. conception
d. pollination
Answer:
B) heredity
Explanation:
The aerodynamic shape and lightness of the blue shark body allow itto move “elegantly” across the oceans. It exhibits countershading likemany other sharks. The upper part is an indigo blue tone while theventral and the sides are white.
It has a long caudal heterocercal fin. The second dorsal fin measuresalmost half the size of the first and its pectoral fins are unusuallylong compared to other sharks. Its eyes are large, its teeth aretriangular, and it has a conical snout.
It reaches a length ranging from 3.8 to 4 meters and weighs about 240kilograms. This species presents slight sexual dimorphism since thefemale tends to measure little more than 1 meter in comparison with themale.