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sdas [7]
3 years ago
8

Wat is the primary evidence that dinosaurs existed in the past

Biology
1 answer:
Nostrana [21]3 years ago
5 0

Fossils Dinosaurs

Explanation:

Fossils are the preserved remains of organisms that has once lived. They are made up preserved remain of their body parts or activities as the case may be.

Dinosaurs are a group of large sized carnivores and herbivores that lived during the mesozoic.

  • Remains of their body parts have been found rock layers.
  • The Sahara desert in some part of Niger in Africa has provided good fossils of dinosaurs for paleontological studies.
  • The imprints of some the activities of these organisms have also been found.
  • Fossils are very good sources to show the existence of ancient lives.

learn more:

Fossils brainly.com/question/9415077

#learnwithBrainly

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Select the most accurate statement describing the basic function of the light reactions of photosynthesis. Select the most accur
S_A_V [24]

Answer:

The basic function of the light reactions of photosynthesis is the conversion of solar energy to chemical energy.

Explanation:

In photosynthesis, the light energy is captured by chlorophyll pigment which is present in the thylakoid membrane. Then this light energy is used split water which releases the electron that enters the electron transport chain. Then electrons move through several electron carriers and helps to generates NADPH and ATP.  

These NADPH and ATP are used in the Calvin cycle to fix the carbon into carbohydrates like glucose. Glucose molecules is then used by the plant to get energy source and to make structural components like cell wall. Therefore during photosynthesis solar energy is converted into chemical energy like glucose.

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3 years ago
Which of these is a way the immune system works with other body systems?
zhenek [66]

Answer:

A. The spleen filters pathogens from blood

Explanation:

-The spleen is sometimes called the “filter of the blood”

-It works closely with the circulatory system for transportation needs and the lymphatic system for production of lymphocytes.

6 0
2 years ago
Serves as the molecular basis for life. DNA copies itself via the process of . RNA is produced from DNA via the process of . Pro
blagie [28]

Answer:

CGTCATC

Explanation:

In a DNA double helix, the complementary bases of two strands of DNA are paired by hydrogen bonds. Adenine of one DNA strand is paired with the thymine of the other strand. Similarly, the guanine of one DNA strand is paired with the cytosine of the other DNA strand. If a portion of one of the two strands of a DNA molecule has the sequence GCAGTAG. The sequence of the other strand would be as following:

One DNA strand: GCAGTAG

Other DNA strand: CGTCATC

8 0
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The scientist is being B. unethical
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The answer is an overhunting.

<span>The bottleneck event means drastic reduction of the population size because of environment changes. The consequence of this is the reduction of genetic variation. The bison population is a good example of the population bottleneck. The bison population drastically reduced its size due to overhunting which culminated at the end of the 19th century, when bisons almost extinct. </span>
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