Because fossil fuels are like dead plants, coal, oil that have been in the ground for a while that can be used for gasoline, and other things. while fossils are like prehistoric animals, and historic discoveries like bones
<h2>DNA hold an organisms hereditary information.</h2>
Explanation:
- DNA stands for deoxyribonucleic acid.
- DNA contains genes that are specific sequence of nucleotide that code some proteins or other gene products.
- Genes are specific to an organism and carry the hereditary information.
- Genes are responsible for the trait or characteristic of an organism.
- DNA is the bearer of hereditary units for most organisms except in case of some Viruses.
- In viruses RNA holds the hereditary information.
Answer:
65
Explanation:
The DNA segment has a total 95 cytosine bases. Since cytosine makes hydrogen bonds with guanine base, this means that the DNA segment has a total 95 guanine bases.
Total guanine + cytosine bases in the segment= 95 + 95 = 190
So, a total of adenine and thymine bases in the DNA segment= 320-190 = 130
Since the number of adenine and thymine bases are equal in a double-stranded DNA molecule, the number of adenine bases in the given segment would be= 130/2= 65
Answer:
1) In trophic levels, producer are organisms which has the ability to make their own food e.g plants and algae. Primary consumers are the organisms which feed on producers e. g deer and zebra etc. Secondary consumers are those which feed on primary consumers and tertiary consumers are those organisms which take energy by feeding on secondary consumers e. g tiger and lions. The pyramid get narrower at each higher level because when we moves upward, the population of organisms decreases.
2) Environmental sphere refers to all the materials that are present in the environment. There are five sphere which are given below.
1) Lithosphere: This sphere comprise of land on which all living organisms lives.
2) hydrosphere: It refers to water bodies.
3) biosphere: It is the living part of the environment.
4) atmosphere: This sphere contains gaese which are necessary for survival.
5) cryosphere: This sphere contains water in stored form.
3) A cycle in which chemical moves from living and non living things to the atmosphere.
1)carbon goes to the atmosphere through respiration and burning of fuel.
2) phosphorus is released after the burning of plant body.
3) nitrogen is released in denitrification process and industries.
4) oxygen is released in the atmosphere through photosynthesis.
5) sulfur is released in the atmosphere through volcanic eruptions.
Answer:
peaks and valleys show population increase and decrease between 2 species or more.
Explanation:
the peaks and valleys are used to show predation hence if there is an increase in prey there will be an increase in the predators and if there is a decrease in prey there will be a decrease in predators therefore creating peaks and valleys in that graph hence demonstrating population interactions between the two species.
