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victus00 [196]
3 years ago
6

What is an indicator that a chemical change has occurred?

Biology
2 answers:
Pachacha [2.7K]3 years ago
7 0

Answer:

a change in energy

Explanation:

julsineya [31]3 years ago
7 0

Answer:

It is A

Explanation:

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Throughout history, the bones, bladders, and horns of animals have been used to create tools.
Basile [38]

Answer:

Animal by-products.

The USDA (United States Department of Agriculture) defines an animal product as anything made from an animal, excluding muscle meat.

3 0
3 years ago
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Jason has five equally massed lead fishing weights, each weighing 250 grams. What is the total mass of the five lead fishing wei
algol [13]

Answer:

1250 g=1.25 Kg

Explanation:

We are given that Jason has five fishes of equally massed lead fish weights.

Weigh of each fish =250 grams

We have to find the value of total mass of the five lead fishing weights

Total number of fishes=5

In order to find the total mass we will use unitary method

Total mass is obtained by multiplying the total number of fishes with weight of one fish

Total mass=5\times 250

Total mass of five fishes=1250 g

1 kg =1000g

Then 1250 g=\frac{1250}{1000}=1.25 Kg

Hence, total mass of five lead fishing weights=1250 g=1.25 Kg

3 0
3 years ago
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If you drop a metal paperclip into a cup of water, it will sink to the bottom, however with practice, you can gently place a met
WARRIOR [948]

Answer:

The answer is A because the water has strong surface tension, I didn't know why but I know it's surface tension holding it up so it has to be A

7 0
3 years ago
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Does carbohydrate hydrolysis by ptyalin continue in the stomach
Akimi4 [234]

<span>Ptyalin hydrolysis does not continue in the stomach because it is destroyed by the stomach once it enter the stomach. </span>

Ptyalin is an amylase enzyme commonly found in the saliva of humans and animals. This enzyme is secreted in the mouth ( buccal cavity) and catalyze the hydrolysis of starch into maltose and dextrin. Immediately the starch leaves the mouth and enter the stomach, stomach acids destroy the ptyalin.

7 0
3 years ago
Which animals are ectothermic? turtles and lizards birds and mammals frogs and mammals lizards and birds?
PilotLPTM [1.2K]
Ectothermic animals are cold blooded animals, or fishes, amphibians, reptiles, and invertebrates. So the right answer would be turtles and lizards. If the answer choices was supposed to look like this
turtles and lizards
birds and mammals
frogs and mammals
lizards and birds
It would be the first option.
Hope this helps!
4 0
4 years ago
Read 2 more answers
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