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const2013 [10]
3 years ago
10

An atom contains 70 protons, 70 electrons, and 99 neutrons. what is the mass number?

Biology
1 answer:
Mrac [35]3 years ago
6 0
How bout you try adding the numbers up or adding the two 70s then subtracting the 99
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Function of the perirenal adipose tissue around the kidney​
fomenos
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3 years ago
Photosynthetic and chemosynthetic organisms can be called primary producers because they make their own food?
LenaWriter [7]

Heterotrophs are organisms that must consume food from other organisms because they are unable to synthesize their own food molecules.

<h3>What is heterotrophs?</h3>
  • An organism is referred to be a heterotroph if it is unable to manufacture food on its own and must obtain it from other sources of organic carbon, primarily plant or animal materials.
  • Heterotrophs are primary, secondary, and tertiary consumers in the food chain but not producers.
  • Because they eat producers or other consumers, heterotrophs are referred to as consumers.
  • Humans, dogs, and birds are all instances of heterotrophs.
  • In a food chain, a group of creatures that supply energy and nutrients to other organisms, heterotrophs occupy the second and third levels.
  • An organism is referred to as a heterotroph if it consumes other plants or animals for food and energy.
  • Its origins are in the Greek words hetero, which means "other," and trophe, which means "nutrition."
  • Autotrophs and heterotrophs are two main classifications of organisms depending on how they receive energy and nutrients.

Learn more about heterotrophs here:

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3 0
1 year ago
Which epithelial layers arise(s) from the endoderm?
Morgarella [4.7K]
The embryonic endoderm<span> develops into the interior linings of two tubes in the body, the digestive and respiratory tube. the </span>lining<span> of the follicles of the thyroid gland and the</span>epithelial<span> component of the thymus (i.e. thymic </span>epithelial<span> cells). Liver and pancreas cells are believed to </span>derive<span> from a common precursor.</span>
7 0
3 years ago
You are an evolutionary entomologist. You have observed beetles that can raise their abdomens and give off a defensive chemical
bagirrra123 [75]

Answer:

mimicry

Explanation:

Mimicry -

It is the resemblance in between two organisms of different species or may be of the same species .

The main reason for mimicry is the protection of the species from the predators .

From the question , the beetles in the second case mimic the characteristic of the first beetle , by raising their abdomen , just top protect them selves .

Hence , the correct term for the given question is - mimicry .

4 0
3 years ago
What important gas did stromatolites (cyanobacteria) release into the atmosphere?
Tju [1.3M]
Cyanobacteria released OXYGEN into the atmosphere through photosynthesis
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