Answer: <u>Increases in atmospheric CO2 and nitrogen deposition associated primarily with fossil fuel burning</u> generally <u>increase plant growth over long periods of time.</u>
The given question is incomplete the complete question is:
The legs of a human and the limbs of a cat are similar in structure. These structures are called ______ vestigial homologous analogous structures. This similarity indicates that ________humans evolved from cats cats evolved from the ancestors of humans cats and humans share a common ancestor .
1) A. Vestigial B. Homologous C. analogous
2) A. Humans evolved from cats B. Cats evolved from ancestors of humans C. Cats and humans share a common ancestor.
Answer:1. (B)Homologous and
2. (C) Cats and humans share a common ancestor.
Explanation:
Homologous structure can be defined as the two stricture in two different organism that appear similar.
They have evolved from the recent common ancestor so they are structurally similar. Due to adaptation of both of the organism in different environment their function is different.
Example: The limbs of humans are used for holding objects and performing various functions but the limbs of cats are used for walking.
They appear similar because their recent common ancestor is same. They are connected to each other because of ancestry.
Number of protons in Uranium-235 is 92
Number of neutrons in Uranium- 235 is 143
Explanation:
Isotopes are the two or more elements having the same number of protons and electrons but different number of neutrons. They differ in their atomic masses.
The statement above is TRUE.
The osteon is the fundamental functional unit of a compact bone. Osteons are roughly cylindrical in shape and they are typically several millimetre long and about 0.2mm in diameter. The osteon resembles the growth ring of a tree trunk.
The cylindrical structure of osteon is made up of four different parts which are a central tube, a lamellae, a lacunae and canaliculi.