Parasitic strains of E. coli may produce poison- ous chemicals that attack living tissue and cause
disease in humans. These chemicals are called
(1) antibodies
(2) toxins
(3) viruses
(4) antibiotics

answer; i believe its (ovulation);

c

explanation:

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

1)

i))the process of preparing food by green plants in the presence of sunlight is called photosynthesis.

ii) leaf is the site for photosynthesis.

iii) it takes place as,

6h2o+6co2=c6h12o6+602