<span>Desertification is the cancer of the earth,” Argentine geographer Elena Abraham told IPS. “It is a process of degradation that does not manifest itself in spectacular ways but furtively advances, and by the time it is visible there is nothing to be done, and people have to move away, in search of an alternative.”</span>
The correct options are:
- Matter is made of small particles.
- Matter's particles are in constant random motion or vibration
- There is empty space between matter's particles.
Anything which has mass and occupies shape is a matter. Matter is composed of particles. The particles of matter are very small in size and they attract each other. There is space between the particles. The particles are in continuous random motion, thus they have kinetic energy. on absorbing energy their movement increases.
Answer:
100%
Explanation:
A pea plant homozygous for the trait of smooth seeds;
let that be = ss
A pea plant that is homozygous for the trait of wrinkled seeds;
let that be = ww
if ss crosses with ww; the F1 produces seeds that are all smooth
i.e ss × ww = (sw, sw, sw, sw)
From the question, we are to find the percentage of the second generation that will produce smooth seeds after self fertilization occurs.
i.e sw, sw, sw, sw × sw, sw, sw, sw
= the result will yield ssww for all F2 progeny
∴ the percentage of plants that will have smooth seeds when the F1 generation is self-fertiized is 100%