:-) :-) :-) :-) :-) :-) :-) :-) :-)

1. Option D. 2. Option A.

Explanation:

1. Every individual has some unique characteristics and therefore, their ability to think and interpret things is different from each other. Hence, every individual concludes things on the basis of his/her own experiences, thinking, thoughts, etc.

Therefore, when two scientists get different results while studying the evolution of the universe then it is likely that they will get different results because both of them will have their own style of identification, hypothesizing things, or situations.

Thus, we can conclude that the two groups of scientists got different results because they had different specialties and interpreted their data differently.

2. It is the Chandrasekhar limit which gives an idea about the formation of the white dwarf, neutron star, or black hole at the last stage of a dying star.

The Chandrasekhar limit is equal to 1.4 solar masses.

As per the Chandrasekhar limit, if the mass of the dying star is less than 1.4 solar mass, then it will become a white dwarf.

If the mass of the dying star is greater than 1.4 solar mass, then a neutron star or black hole is formed.

Hence, the correct answer to this question is mass.

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation:

i don't know, but does anyone wanna be friends? i'm doing my homework at 1: 49 in the morning : /