Answer:
C. Placental mammals
Explanation:
The placentals are the largest group of mammals, totally dominating the class and terrestrial habitats.
Amnium, the fluid that protects the embryo from adhesions and shocks, is installed in the female's uterus for development with the help of a placenta that provides fixation and nutrients.
This breeding method, although producing a smaller number of offspring per pregnancy, has a high success rate, allowing greater chances of survival to offspring.
B.Sewage treatment are built to clean the water
C.Natural fruit acids are used to dissolve the oil
D.Bacteria are added to the ground water to feed an oil
The right answer is C. +1 (for hydrogen).
The hydrogen atom can lose its single electron to give the H + ion, commonly referred to as the proton name. In fact, the atom which has lost its only electron is reduced to its nucleus, and in the case of the most abundant isotope 1H, this nucleus consists only of a proton. This name is not strictly correct if one takes into account the presence, although discrete (less than 0.02%), of the other isotopes. The name hydron is more general (we also say hydrogen ion, despite the possible confusion with the H- anion).
Answer:
C. +1 (for hydrogen).
B) flagella
C) cytoplasm
D) cell membrane